Com. v. Montalvo-Rivera, C.

J-A11032-25

2025 PA SUPER 139

COMMONWEALTH OF PENNSYLVANIA : IN THE SUPERIOR COURT OF

: PENNSYLVANIA

:

v. :

:

:

CARLOS MONTALVO-RIVERA :

:

Appellant : No. 977 MDA 2023

Appeal from the Judgment of Sentence Entered June 21, 2023

In the Court of Common Pleas of Lancaster County Criminal Division at

No(s): CP-36-CR-0000756-2020

BEFORE: MURRAY, J., KING, J., and STEVENS, P.J.E.*

OPINION BY STEVENS, P.J.E.: FILED: JULY 9, 2025

Appellant, Carlos Montalvo-Rivera, appeals from the judgment of sentence

entered June 21, 2023, by the Lancaster County Court of Common Pleas

following trial by jury and subsequent conviction. After careful review, we

affirm.

On February 24, 2020, by filing of a Criminal Information Appellant was

charged with: one count Criminal Homicide1; one count Arson with danger of

death or bodily injury2; three counts of Criminal Attempt – Criminal Homicide3;

and one count of Causing a Catastrophe4. The matter proceeded to trial by

jury on March 20, 2023. Appellant was convicted on April 6, 2023, of Murder

____________________________________________

* Former Justice specially assigned to the Superior Court.

1 18 Pa.C.S.A. § 2501(A)

2 18 Pa.C.S.A. § 3301(A)

3 18 Pa.C.S.A. §901, §2501

4 18 Pa.C.S.A. §3302(A)

J-A11032-25

in the First Degree, found guilty on all remaining counts, and subsequently

was sentenced to life in prison for First Degree Murder, plus twenty to forty

years’ incarceration. He timely filed his notice of appeal on July 7, 2023.

At trial, the jury found that the Commonwealth proved beyond a reasonable

doubt that in the early morning hours of December 6, 2010, Appellant set fire

to his residence, one of a row of attached homes located at 14 North Plum

Street, Lancaster Pennsylvania, with his wife and three children inside. This

fire resulted in serious bodily injury to his two daughters, and the death of his

wife Olga Sanchez. N.T. at 261.

The Commonwealth proceeded on the theory that these events were the

culmination of an escalating pattern of abusive and threatening behavior from

Appellant directed towards his wife, Ms. Sanchez, and in support thereof,

adduced testimony from several witnesses establishing that Appellant had

previously threatened to kill Ms. Sanchez. The victim’s older brother, Julian

Sanchez, testified that on one occasion he heard Appellant tell the victim “he

was going to kill her like a bitch.” N.T. at 1037. The victim’s sister, Dolores

Ojeda, testified that on a separate occasion, the Appellant confirmed to her

that he had threatened to kill the victim “like a dog.” N.T. at 1291-1292. A

third witness, the victim’s close personal friend, Rosaura Reyes, confirmed

that she had been confronted by Appellant about yet another past death threat

he made towards the victim, wherein Appellant pointed a gun at her. N.T. at

1263. Ms. Reyes confirmed that the victim had told her about this incident

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prior to her death; in response to this, Appellant denied that the incident had

ever occurred, and said “unfortunately Olga [is] dead and she was the only

one who could say otherwise.” Id. Ms. Reyes also confirmed that the victim

had been having an affair with another man. N.T. 1258.

After the fire, the victim’s body was found on her back, on the floor in her

bedroom near where the fire had originated. The forensic medical examiner,

Dr. Wayne Ross, observed the body at the scene and subsequently performed

the autopsy. He noted that Ms. Sanchez’ tongue was protruding from her

mouth and dented with teeth marks, and he found that she had suffered a

brain herniation, which, taken together, indicated pre-mortem strangulation

resulting in a loss of consciousness. N.T. 1415-1419. Further, the doctor found

isopropyl alcohol, an accelerant, in the victim’s lungs, indicating that the

accelerant was poured down her throat. Id. The doctor also found soot in the

victim’s airway. Id. at 1417-1418. Blood testing revealed that the victim’s

carbon monoxide level was elevated, but still relatively low at 9.5%, which

indicated to the doctor that the victim was alive when she fire was set, as she

had inhaled some smoke, but died almost immediately thereafter. Id.

At the scene, Dr. Ross completed a “sex kit;” in so doing he took swabs of

the victim’s oral, vaginal, and rectal regions. Id. at 1413. Subsequent testing

of those samples showed the presence of sperm in the vaginal swabs, and

semen, but no sperm, in the rectal swabs. Id. at 1419-1420. In interpreting

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those findings, and his observations made at the scene, the doctor opined as

follows:

“A: [] There were sperm identified [] in the vaginal region, which

indicates that there was penetration. But there was only semen

identified in the rectal region. No sperm were identified by

serology and during serology testing. So that is consistent with

the fact she was found lying on her back, even though she's [] on

her back, she's incapacitated due to the neck compression and

everything else, she's still breathing. But ultimately, if she's lying

there, the fluids from her vaginal region seeped out and drained

down into her anal rectal region. So that is compatible [] with

contamination. I considered the fact, would the anal rectal region

represent separate penetration? I considered that, but it's most

consistent in my mind, the fact is that we're dealing with

contamination; that is, there was previous sexual penetration and

then the fluids flow down due to [gravitational] forces while she's

lying on her back and the fluids drained down into her anal rectal

region. I didn't see any evidence of recent penetration in that

area. If there were recent penetration, I would see dilatation; that

is, the anal rectal region would have a larger hole, and I didn't see

any evidence of that.

Q. In other words, recent sexual activity but then never had stood

back up after that activity, --

A. Right.”

Id. at 1419-1420 (cleaned up).

The contents of the swabs taken from Ms. Sanchz’ body were subjected to

DNA testing and compared with a sample taken from Appellant; the results of

that testing were the subject of a stipulation by the parties indicating that the

samples were several quintillion times more likely to have originated from the

victim and the Appellant than from any other individuals. Id. at 1402-1403.

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Dr. Ross determined the cause of death to have been a combination of

thermal burns and suffocation from strangulation and smoke inhalation. Id.

at 1415-1419.

At the time the fire was set, Appellant’s son and two daughters were asleep

in a bedroom on the third floor of the residence. They were awoken by the

smoke alarm and thus were able to escape through a window on the third

floor, the stairs having been blocked by the fire. While all three children

survived, the youngest child sustained substantial bodily injuries after jumping

from the roof of the residence onto the ground three stories below, and the

middle child suffered severe burns on a large percentage of her body before

being pulled out through the window onto the roof of the residence by her

older brother and ultimately escaping with the assistance of a neighbor

through an attached home.

Appellant raises seven questions for this Court’s consideration:

1. Was the evidence sufficient as a matter of law to support

Appellant’s conviction?

2. Was it an error of the court to admit the testimony of Officer

Greathouse concerning Kasey Winn?

3. Was it an error of the court to allow Detective Bonilla to testify

as an expert in cultural linguistics without proper pre-trial

notice under Rule 573; or, in the alternative, to admit Detective

Bonilla as an expert at all?

4. Was it an error of the court to admit the testimony of Julian

Sanchez concerning Appellant’s prior threatening statements

concerning his wife?

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5. Was it an error of the court to admit the testimony of Rosaura

Reyes concerning Appellant’s prior threatening statements and

actions?

6. Was it an error of the court to admit the testimony of Dolores

Ojeda concerning a domestic conflict between appellant and his

wife one year before the alleged arson; or, in the alternative,

was Ms. Ojeda’s testimony improperly admitted hearsay?

7. Was it an error of the court to allow Detective Nickel to provide

lay testimony on the meaning and effect of cellphone records?

Appellant’s Brief at 9.

In Appellant’s first issue, he contends that the evidence in this case was

insufficient to prove that he was the individual responsible for setting the

December 6, 2010, fire that led to the death of his wife and served as the

basis for all charges of which he was convicted. As Appellant has limited his

challenge to the Commonwealth’s evidence concerning the identity of the

perpetrator, our scope of review is likewise narrowed.

We begin by setting forth our standard of review for assessing a sufficiency

of the evidence claim; in doing so we determine:

“[W]hether the evidence admitted at trial, and all reasonable

inferences drawn from that evidence, when viewed in the light

most favorable to the Commonwealth as verdict winner, were

sufficient to enable the fact[-]finder to conclude that the

Commonwealth established all of the elements of the offense

beyond a reasonable doubt.

*

In addition, we note that the facts and circumstances

established by the Commonwealth need not preclude every

possibility of innocence. Any doubts regarding a defendant's

guilt may be resolved by the fact-finder unless the evidence is

so weak and inconclusive that as a matter of law no probability

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of fact may be drawn from the combined circumstances. The

Commonwealth may sustain its burden of proving every

element of the crime beyond a reasonable doubt by means of

wholly circumstantial evidence.... Furthermore, when

reviewing a sufficiency claim, our Court is required to give the

prosecution the benefit of all reasonable inferences to be drawn

from the evidence.

*

These principles apply to a challenge to the sufficiency of the

evidence offered to identify a defendant as the perpetrator of

the alleged crime.”

Commonwealth v. Pledger, 332 A.3d 29, 34 (Pa. Super. 2025)(internal

citations omitted).

We find the assessment of the trial court on this matter to be soundly

reasoned and well-supported by the record. As noted by the lower court:

“there is substantial evidence that a fire was actively lit at 14 North Plum

Street on December 6, 2010[:] the presence of gasoline and other ignitable

liquids, as detected by a specialized accelerant sniffer dog and confirmed by

forensic scientist Jessica Mulhollem, along with the behavior of the fire as

observed by firefighters on the scene support that inference.” Trial Court

Opinion at 3 (unpaginated).

The Commonwealth’s case demonstrated a deterioration of Appellant’s

relationship with his wife; she was having an affair with another man, and the

Appellant had previously threatened her life on several occasions. The forensic

evidence established that the victim was then strangled while laying on her

back, on the floor of her bedroom, still in the position in which she was laying

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when she had been recently vaginally penetrated. The semen found in the

victim resulting from that penetration is several quintillion times more likely

than not to have been the Appellant’s. On the evening in question, only the

Appellant, his wife, and his children were present in the home, and, as noted

by the trial court:

“[t]here is also substantial evidence to infer that nobody entered or exited

the building before the fire was lit, based upon the family's dogs' failure to

respond to any alleged intruders, the non-activation of the family's home

security system on the first floor, and the neighborhood security cameras

not capturing anyone fleeing the scene of the arson.”

Trial Court Opinion, at 3-4 (unpaginated)(internal citations omitted).

On Appeal, Mr. Montalvo-Rivera seeks to invoke an exception to the

standard of review outlined above, as was employed in In the Interest of J.B.,

189 A.3d 390 (Pa. 2018). This exception would permit this Court to set aside

“the factual findings and credibility determinations rendered by the finder of

fact,” and would “compel[] [us] to reverse a legally erroneous conviction,” if

“the entire body of evidence introduced at trial which furnished the basis for

an appellant’s conviction is so deficient that it does not reasonably support a

finding of guilt beyond a reasonable doubt, as a matter of law.” Appellant’s

Brief at 13-14. Appellant bases this proposed deviation on his assertion that

his theory of the case is at least “equally consistent with” the evidence as is

Commonwealth’s. Appellant’s Brief at 19. We strongly disagree with his

assessment. Rather, we adopt the well-reasoned, and well-supported, opinion

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of the trial court regarding the Commonwealth’s thorough rebuttal of

Appellant’s theory.

“Appellant's arguments at trial did not raise substantial or

reasonable doubt as to the facts the Commonwealth presented,

and additionally were thoroughly rebutted by the

Commonwealth's expert testimony. Appellant argued that

multiple unidentified assailants allegedly broke into the house at

14 North Plum Street and knocked him unconscious with a blow

to the back of his head. After being unconscious for an extended

period of time no less than 45 minutes, Appellant allegedly woke

up on the floor with his hands tied, surrounded by smoke from the

burning house. He then allegedly escaped from the open

bathroom window.

Setting aside Appellant's subsequent claims about the identity and

motive of the supposed assailants, the condition of Appellant's

body upon examination by emergency medical technicians does

not corroborate his account. At trial, the Commonwealth

presented the report and testimony of forensic pathologist Dr.

Wayne Ross, a highly skilled and qualified member of his

profession, regarding the physical state of Appellant after the fire.

Ross, upon reviewing Appellant's CT scans and hospital records

following the fire, found that to a reasonable degree of medical

certainty that Appellant did not experience a traumatic brain

injury, exhibiting no direct signs of injury to the brain or

subsequent post-concussion syndrome. This presentation - or lack

thereof – was corroborated by other witnesses who identified

Appellant during and after the fire, especially the emergency

physician who examined him. According to Dr. Ross, if Appellant

had been hit on the back of the head hard enough to be

unconscious for the alleged amount of time, to a reasonable

degree of medical certainty there would have been more evidence

of damage than a 2-centimeter square bruise. [] There was no

evidence in the medical record that Carlos Montalvo-Rivera

showed any change in balance, vision, memory compatible with

being knocked unconscious for a minimum of 45 minutes .... there

was no evidence in the medical record that he showed symptoms

of headache or sensitivity to light. There were no findings

compatible with being struck by a blunt object. []

Additionally, Dr. Ross testified about Appellant's

carboxyhemoglobin level – the measure of carbon monoxide

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absorption into the blood as a result of exposure to smoke. Dr.

Ross indicated that a value of less than 4 is a "normal" result, and

that individuals who smoke recreationally usually have a value of

at most 8. Earlier expert testimony from the emergency physician

Dr. Trystan Davies indicated that values over 20 may require

hospitalization, and a value over 30 would be life-threatening. Dr.

Ross testified directly to the correlation between an individual's

carboxyhemoglobin level and the potential harm caused by smoke

inhalation: ‘... when you're in a lot of smoke, there's a lot of

carbon monoxide, you take a few breaths of all that smoke and

everything, it will raise your level 30, 40 percent and it's lights out

after that.’ Appellant's oldest child, Carlos Montalvo-Rivera Jr.,

quickly escaped from the building along with his two sisters, only

receiving minor burns on his right hand. His carboxyhemoglobin

level was 0.7. Appellant's older daughter, Kiana, was the last to

leave the building, experiencing severe burns to her arms and

neck, covering 22 percent of her body. Her carboxyhemoglobin

level was 1.0. Dr. Ross testified that he discovered in his

December 7, 2010 autopsy of Olga Sanchez, Appellant's wife, that

her carboxyhemoglobin level was 9.5. Dr. Ross testified that this

level was the result of her taking a "partial breath" before dying

during the fire, as she had already been rendered unconscious due

to compression of the oral pharynx depriving her brain of oxygen.

Appellant allegedly spent at minimum 45 minutes unconscious

inside of the burning building, awoke to smoke so thick he ‘could

not see in any direction,’ and somehow made it to and out of the

bathroom window, with his hands tied. Appellant's measured

carboxyhemoglobin level was 3.2. The numerical value of the

carboxyhemoglobin test is a percentage of the named substance

present in the blood sample. According to Dr. Ross, if Appellant's

account of events was accurate, to a reasonable degree of medical

certainty he would have had a carboxyhemoglobin level of "40,

50, 60 percent." Appellant, to a reasonable degree of medical

certainty, would also be dead:

‘that is, if one wakes up in a room, whether it's 40, 45

minutes, 15, 10 minutes and there's smoke everywhere to

the point where one is blinded and there's so much smoke,

there's going to be so much carbon monoxide in that smoke,

you breathe it in, take a few breaths of all that smoke in

there, it will kill you.’

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Dr. Ross, also stated in his report that if Appellant would have

survived such conditions, his measured levels would be

substantially higher. Appellant's attested levels of

carboxyhemoglobin more closely align with the account presented

by several witnesses to the fire, where Appellant was seen

attempting to enter the building as the fire department arrived.

Appellant would also to a reasonable degree of medical certainty

have substantial burns both externally and internally due to the

heat and the smoke, which were not present during medical

examination.”

Trial Court Opinion at 4-7 (unpaginated)(internal citations omitted).

In consideration of the foregoing, it is reasonable to infer from the

evidence: that Appellant was the only person in the room with the victim when

she died; that she was strangled to the point where she lost consciousness;

that the fire was lit in that same room, intentionally, with use of a chemical

accelerant; that the victim died as a result of strangulation and exposure to

the fire and resulting smoke; and that Appellant had had intercourse with her

while she lay on her back; she did not move from that position prior to her

death. Therefore, we find that the Commonwealth clearly adduced sufficient

evidence to carry their burden, and Appellant’s first issue merits no relief.

The remainder of Appellant’s issues concern the admission of testimony. In

addressing these claims, we apply the following standard of review:

“The admissibility of evidence is a matter within the sound

discretion of the trial court and will be reversed only where there

is a clear abuse of discretion. Our standard of review of a challenge

to an evidentiary ruling is therefore limited.”

Commonwealth v. Williams, 2020 PA Super 246, 241 A.3d 1094, 1101 (Pa.

Super. 2020) (citation omitted).

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An abuse of discretion is more than “a mere error of judgment,” but rather

will only be found where:

“[T]he [trial] court has reached a conclusion which overrides or

misapplies the law, or where the judgment exercised is manifestly

unreasonable, or the result of partiality, prejudice, bias or ill-will.

Importantly, [this C]ourt should not find that a trial court abused

its discretion merely because [we] disagree[ ] with the trial court's

conclusion. Indeed, when reviewing the trial court's exercise of

discretion, it is improper for [this C]ourt to 'step[ ] into the shoes'

of the trial judge and review the evidence de novo. In other words,

[this C]ourt may not disturb a trial court's discretionary ruling by

substituting its own judgment for that of the trial court."

Commonwealth v. Gill, 651 Pa. 520, 206 A.3d 459, 467 (Pa. 2019) (citations

and some quotation marks omitted).

In his second issue, Appellant contends that the lower court improperly

admitted the testimony of Officer Greathouse concerning a statement made

by eye-witness Kacey Wynn relaying to the officer the location of a cord which

had been wrapped around Appellant’s hands. We disagree with Appellant’s

characterization of this testimony as hearsay.

Pursuant to Pennsylvania Rule of Evidence 801, “hearsay” is a statement

which “the declarant does not make while testifying at the current trial or

hearing,” and which “a party offers in evidence to prove the truth of the matter

asserted in the statement;” the admission of hearsay is prohibited by

Pennsylvania Rule of Evidence 802. However, it is well-settled that “an out[-

]of[-]court statement offered not for its truth but to explain the witness's

course of conduct is not hearsay." Commonwealth v. Rega, 933 A.2d 997,

1017 (Pa. 2007) (citing Commonwealth v. Sneed, 526 A.2d 749, 754 (Pa.

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1987)); see also Commonwealth v. Weiss, 81 A.3d 767, 805-806 (Pa.

2013). Further, erroneous admission of hearsay evidence is harmless where

such evidence is merely cumulative of other untainted, substantially similar

evidence. Commonwealth v. Koch, 106 A.3d 705, 721 (Pa. 2014)(citing

Commonwealth v. Johnson, 576 Pa. 23, 41-42, 838 A.2d 663, 674 (2003)).

The testimony at issue in the present case is recorded in the transcript as

follows:

“Q. […] You said you had spoken with Kacey Wynn at the scene. What

did you learn from speaking to him at the scene?

A. Mr. Wynn said that a gentleman had exited the foot alley between

14 and I guess it would be 12 North Plum Street with his hands down

behind his back with some sort of cord. Mr. Wynn had attempted to

remove the cord, was unable to do so. Another witness, Mr. Jonathan

Santiago, was able to yank on the cord so it was removed from this

person’s hands or wrists.

Q. And did you ask Mr. Wynn where the cord was?

A. At some point I asked where the cord was, yes.

Q. Okay. And so he – he told you where this cord was and you were

able to go there to collect it?

A. Yes.

Q. Okay. So you collected the wire cord for evidentiary purposes?

A. I did.”

N.T. at 269.

The Commonwealth then proceeded to have Officer Greathouse identify on

a map the precise location from which the cord was recovered. Id. at 271.

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Later that same day, the Commonwealth called Kacey Wynn to testify as to

what he had observed on the day of the fire outside Appellant’s home.

Here, we find no abuse of discretion in the lower court’s admission of Officer

Greathouse’s testimony. After review of the record, it is clear that the

testimony was offered for a non-hearsay purpose: to explain the course of

events which led to the collection of the cord, to which Officer Greathouse was

directed by Mr. Wynn. To the extent this testimony could be construed as

hearsay, it is merely cumulative with the untainted and substantially similar

testimony offered by Mr. Wynn at trial. As such, Appellant’s second issue

merits no relief.

In his third issue, Appellant argues that the trial court erroneously

permitted Detective Bonilla to offer expert testimony, both because Detective

Bonilla was not qualified to render an opinion on the subject at issue and

because the Commonwealth failed to provide advance notice pursuant to

Pa.R.E.573.

For context, this matter concerns a Spanish-language text message sent

from the victim’s phone to her brother Amauris on the morning of the fire,

appearing to be from her murderer. N.T. 1025-1026. In that text, the author

claims that the murder of Olga Sanchez was an act of revenge against her

brother, Amauris, and the text refers to Amauris as a “chivato,” meaning

snitch. Id. Amauris was called to the stand by the Commonwealth, and

relayed that he had previously testified against several men in federal court

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in cooperation with the DEA. N.T. 992-993. The four men against whom

Amauris testified were all Mexican. N.T. 1507. Amauris testified that he didn’t

believe the fire had anything to do with his cooperation, because, he “knew

that [the text] was not a Mexican talking.” N.T. 992-993. In his brief, Appellant

explains that Detective F was called by the Commonwealth to opine on

whether “the use of the word chivato for snitch in the text message was

inconsistent with the message having been sent by a Mexican speaker,” which

would have supported Amauris’ position that the fire was unrelated to his

cooperation with the DEA. Appellant’s Brief at 26.

We will first address whether Detective Bonilla was qualified to offer an

expert opinion on the frequency of occurrence, or the non-occurrence, of the

word “chivato” in Mexican Spanish. We find Appellant’s statement of the law

relevant to this inquiry to be accurate:

“Pa.R.E. 702 governs testimony by expert witnesses. It provides

in pertinent part that ‘[ a] witness who is qualified as an expert by

knowledge, skill, experience, training, or education may testify in

the form of an opinion or otherwise if... the expert's scientific,

technical, or other specialized knowledge is beyond that

possessed by the average layperson’ and if it ‘will help the trier of

fact to understand the evidence or to determine a fact in issue.’

Under Pennsylvania law, the standard for qualification of an expert

witness is a liberal one. In order to qualify as an expert witness in

a given field, a witness normally need only possess more expertise

than is within the ordinary range of training, knowledge,

intelligence, or experience. If an expert witness has any

reasonable pretension to specialized knowledge on the subject

under investigation, she may testify and the weight to be given to

such testimony is for the trier of fact to determine”

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Appellant’s Brief at 29 (citing Povrzenich v. Ripepi, 257 A.3d 61 (Pa.

2021))(internal citations omitted).

In looking to his qualifications on the record, we see that Detective Bonilla

is a fluent Spanish speaker, having been born into a Spanish-speaking family

in New York. N.T. at 1017-1018. He is a veteran law enforcement officer with

over thirty years of service who, in the course of his duties, has been certified

as a Spanish-English interpreter in both state and federal courts. Id. Through

his career, he has performed interviews in Spanish, served as a translator for

English-speaking officers conducting interviews with Spanish speakers, and

has translated and transcribed interviews conducted in Spanish for use in court

proceedings. Id.

Regarding his familiarity with the Mexican dialect, specifically, the detective

testified that he had worked on cases concerning transcribing Mexican

speakers’ words hundreds of times, that he was familiar with Mexican gangs

and their language usage through his involvement with “Gangs Across

America,” and various investigations, and further, on a personal level, that he

has Spanish-speaking family members from Mexico. Id. at 1021. As concerns

comparing that dialect with non-Mexican dialects, the detective clarified that

in the course of his life, both personal and professional, he has spoken with

Spanish-speaking people from virtually every country where Spanish is

spoken, and he has family members from numerous Spanish-speaking

countries in North, Central, and South America. Id. at 1016-1017. Thus, we

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are satisfied that Detective Bonilla has, at least, a “reasonable pretension to

specialized knowledge” of Mexican Spanish as compared to other Spanish

dialects, and the trial court did not abuse their discretion in allowing his expert

testimony on this subject.

We now turn to the issue of notice of intent to introduce expert testimony.

Again, we find Appellant’s statement of the law relevant to this issue accurate:

“Rule 573(D) imposes a continuing duty to disclose ‘additional

evidence, material, or witnesses[,] subject to discovery or

inspection[.]’ Moreover, this Court has repeatedly emphasized

that the purpose of Rule 573 is to ‘permit parties in criminal

matters to be prepared for trial’ and that ‘trial by ambush is

contrary to the spirit and letter of those rules and will not be

condoned.’”

However,

“discovery violations do not automatically entitle an appellant to

a new trial; the appellant must demonstrate that the violation

resulted in prejudice. Our case law suggests that prejudice in this

context requires an appellant to demonstrate that a timelier

disclosure would have affected his trial strategy or otherwise

resulted in prejudice in the typical outcome determinative sense.”

Appellant’s Brief at 27-28(citing Commonwealth v. Dunn, 300 A.3d 324 (Pa.

2023)(internal citations omitted)(footnote omitted)).

We also note that Rule 573 “provides a variety of remedies for discovery

violations,” when they occur, and “regardless of whether a discovery violation

has occurred involving an expert witness, the court, upon motion, may order

that the expert prepare, and that the attorney for the Commonwealth disclose,

a report stating the subject matter on which the expert is expected to testify;

the substance of the facts to which the expert is expected to testify; and a

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summary of the expert's opinions and the grounds for each

opinion." Commonwealth v Dunn, 300 A.3d 324, 347 (Pa. 2023). Where a

violation has occurred, a continuance is “generally deemed sufficient to

eradicate possible prejudice and enable the defendant to assimilate new

information.” Id.

Here, the Commonwealth did not provide any notice to the defense prior

to trial regarding Detective Bonilla’s expert testimony; instead, they

proceeded on the erroneous belief that the detective could testify as a lay

witness. N.T. 833. Following objection by the defense, the trial court correctly

ruled that the proposed testimony at issue was, clearly, an opinion requiring

an expert witness; the court then instructed the Commonwealth to have

Detective Bonilla prepare a report to be served upon the defense by end of

business that day, and instructed the Commonwealth to recall the detective

several days later, affording the defense time to review the report and prepare

a response. Id. at 838, 841. We find that the trial court’s remedy was

consistent with our holding in Dunn, supra, and therefore the trial court did

not abuse its discretion in admitting this testimony.

We also further note that the record does not support a finding of prejudice

arising from this ruling, especially where trial counsel offered effective cross

examination of the detective. N.T. 1029-1030. Detective Bonilla ultimately

testified that the use of the word “chivato” indicated a Cuban dialect, and he

repeatedly allowed for the possibility that the text message may indeed have

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been written by a Mexican-Spanish speaker due to the proximity of Cuba and

Mexico. Id. Further, the detective agreed that the Appellant was Puerto Rican,

not Cuban, and the word “chivato” is not a common word in Puerto Rican

Spanish either, which uses the same words for “snitch” as Mexican Spanish.

Id. Thus, Detective Bonilla’s testimony ultimately made no more likely than

not either the Commonwealth or the Appellant’s theory concerning the origin

of the text. Thus, this issue merits no relief.

In his fourth and fifth issues, Appellant contends that the lower court

improperly admitted the testimony of Julian Sanchez, the victim’s brother, and

Rosaura Reyes, the victim’s friend, respectively, who both testified to events

involving prior threats made by Appellant to the victim. However, the defense

failed to object to the admission of either Mr. Sanchez’ or Ms. Reyes’ testimony

at trial, raising both issues for the first time in his 1925(b) concise statement.

As such, both issues are waived, and merit no relief. See Pa.R.A.P. 302(a);

Commonwealth v. Berrios, 434 A.2d 1173 (Pa. 1982); Commonwealth v.

Clair, 326 A.2d 272 (Pa. 1974).

In his sixth issue, Appellant contends that the trial court erroneously

admitted the testimony of Dolores Ojeda, the victim’s sister, either because it

was improper evidence of a prior bad act, or, in the alternative, because it

was hearsay.

Pursuant to Pa.R.E. 404(b)(1), “[e]vidence of any other crime, wrong, or

act is not admissible to prove a person's character in order to show that on a

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particular occasion the person acted in accordance with the character.”

However, “[such] evidence may be admissible for another purpose, such as

proving motive, opportunity, intent, preparation, plan, knowledge, identity,

absence of mistake, or lack of accident.” Pa.R.E. 404(b)(2). Further, in the

context of a criminal case, “[such] evidence is admissible only if the probative

value of the evidence outweighs its potential for unfair prejudice,” and

additionally, “the prosecutor must provide reasonable written notice in

advance of trial so that the defendant has a fair opportunity to meet it, or

during trial if the court excuses pretrial notice on good cause shown, of the

specific nature, permitted use, and reasoning for the use of any such evidence

the prosecutor intends to introduce at trial.” Pa.R.E. 404(b)(2), (3).

Here, the challenged testimony was the subject of the Commonwealth’s

Notice of Intent to Intro. Evid. Of Other Crimes, Wrongs or Acts, filed on

February 10, 2023. In the testimony at issue, Ms. Ojeda would go on to state

that in August or September of 2009, just prior to the December 6, 2010, fire,

the victim had called her and asked for Ms. Ojeda to come to the couple’s

Plum-street house and to bring her husband Chris. N.T. 1284. Ms. Ojeda did

so, and she described the victim and Appellant’s house being in a state of

disarray, with broken ceramics and glass covering the floor. N.T. 1286. The

victim was sitting on the stairs to the second floor, and Appellant was standing

nearby, in the living room on the first floor. N.T. 1287. At that time, Ms. Ojeda

asked the victim what had happened, and the victim stated that there had

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been a fight between herself and Appellant. Id. The victim then told Ms. Ojeda

that the Appellant had threatened to kill her, to which Appellant responded

“yes, I did tell her that if I have to[,] I’m gonna kill her like a dog.” N.T. 1292.

The trial court recounted their ruling as follows:

“Based upon the information provided in the Commonwealth's

required pre-trial notice concerning this testimony, Ms. Ojeda's

testimony presents many relevant facts relating to the crimes

charged, such as Appellant's potential motive for his alleged

actions, his subsequent intent to commit the alleged offenses, and

the lack of a mistake or accident leading to the alleged arson. […]

This Court, applying its discretion, found that this information

would be more probative to the case than unfairly prejudicial

against Appellant .”

Trial Court Opinion at 13, (unpaginated)(internal citation omitted).

Here, as the Commonwealth satisfied the procedural requirements of

Pa.R.E. 404(b)(3) by filing their notice well in advance of trial, and the

challenged testimony fell squarely within the permissible purposes as outlined

in Pa.R.E. 404(b)(2), we see no basis for finding an abuse of discretion. The

probative value of the evidence is substantial, and there is little risk of unfair

prejudice. Thus, this issue merits no relief on the basis of Pa.R.E. 404(b).

Appellant also asserts that Ms. Ojeda’s testimony constitutes inadmissible

hearsay, but does little more than assert as much. The entire argument to this

point as presented in his brief is as follows:

“Similarly, Dolores Ojeda's testimony was improperly admitted.

Ojeda testified that she went over to the house sometime prior to

the incident and that there had been a fight. Much of what she

testified to she did not observe; rather, she was recounting what

the decedent told her, i.e[.], that they had been involved in a

fight, what had occurred, etc. This of course was hearsay without

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an objection [sic] and therefore inadmissible. See Commonwealth

v. Fitzpatrick, 255 A.3d 452 (Pa. 2021). She also said that in the

context of what was very clearly a heated argument Mr. Montalvo-

Rivera said that he would kill his wife like a dog.”

Appellant’s Brief at 34.

The very next line of his brief begins “[a]gain, and notwithstanding the

issue of hearsay,” before going into an argument addressing the

appropriateness of the admission of testimony pursuant to Rule 404(b).

Appellant’s Brief at 34. This is mere issue spotting, not a developed argument,

and “[t]his Court will not act as counsel and will not develop arguments on

behalf of an appellant.” Commonwealth v. Kane, 10 A.3d 327, 331 (Pa.

Super. 2010). See also, Commonwealth v. Buterbaugh, 91 A.3d 1247,

1262 (Pa. Super. 2014) (en banc), appeal denied, 104 A.3d 1 (Pa. 2014) ("The

Pennsylvania Rules of Appellate Procedure require that each question an

appellant raises be supported by discussion and analysis of pertinent

authority, and failure to do so constitutes waiver of the claim.") (citation

omitted, emphasis added). Thus, this issue is waived and does not entitle

Appellant to relief.

In his seventh issue, Appellant contends that the trial court erred by

permitting Detective Nickel to testify as to the content of the victim’s phone

records as a lay witness, or, in the alternative because reliance on the phone

record’s legend was hearsay.

As aptly noted by the Commonwealth, this Court has very recently

addressed the admissibility of “testimony about the contents of cell phone

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records,” and observed that “while expert testimony is permissible, there is

precedent for the proposition that, where the testimony is non-technical and

not beyond the comprehension of laypersons, said testimony is not expert

testimony.” Commonwealth v. Grubbs, 330 A.3d 444, 450 (Pa. Super.

2025). We offered as an example a recent United States Third Circuit Court of

Appeals, which concluded:

“where a witness testifies merely to the contents of cell phone records,

including cell-site location information ("CSLI"), or explains that cell

phones are designed to find the strongest signal, this testimony does

not require scientific, technical, or other specialized knowledge, because

any cell phone user of average intelligence would be able to understand

that the strength of one's cell phone reception depends largely on one's

proximity to a cell phone tower."

Id. citing U.S. v. Baker, 496 Fed. Appx. 201, 204 n.1 (3d Cir. 2012)

(unpublished).

Here, after review of the record, we are satisfied that Detective Nickel did

very little more than relay information found in the AT&T service records

relative to Olga Sanchez’ phone and the legend provided therewith, and

certainly did not offer any testimony requiring scientific, technical, or

specialized knowledge beyond the understanding of any phone user of average

intelligence. We find no abuse of discretion in the admission of this testimony;

this issue merits no relief.

In addressing Appellant’s assertion that Detective Nickel’s reliance on the

cell phone records’ legend constituted hearsay, we incorporate our above

discussions of waiver relative to Appellant’s fourth, fifth, and sixth issues.

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Here, Appellant did not raise a hearsay objection at trial regarding the phone

record legend, did not raise that issue in his concise statement, and, in his

brief, merely issue spots, stating:

“[m]oreover, the ‘legend’ was hearsay, and unlike expert witnesses, lay

witnesses cannot rely on hearsay when giving their opinions. See Hammel

v. Christian, 610 A.2d 979 (Pa. Super. 1992) (even though a lay witness'

opinion is admissible, statements contained therein must comport with the

other relevant rules of evidence, including the hearsay rule). This was

wholly inadmissible lay opinion testimony.”

Appellant’s Brief at 36.

As such, this final issue is waived.

For the foregoing reasons, we find that Appellant has presented no issue

meriting the requested relief. Accordingly, we affirm.

Judgment of sentence affirmed.

Judgment Entered.

Benjamin D. Kohler, Esq.

Prothonotary

Date: 7/9/2025

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