# Md. Rule 4-641: Rule 4-641. Criminal Investigation—Applicability

> Maryland · Court rules · In force

URL: https://www.frixlaw.com/law-library/statutes/SRULES_MD_T4_R4_641

## Section

- **Citation:** Md. Rule 4-641
- **Heading:** Rule 4-641. Criminal Investigation—Applicability
- **Jurisdiction:** Maryland
- **Kind:** Court rules
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Maryland Rules / Title 4 Criminal Causes / Chapter 600 Criminal Investigations and Miscellaneous Provisions / Md. Rule 4-641

## Text

Rules 4-641 through 4-644 apply to circuit court procedures relating to criminal investigations. “Criminal investigation” means inquiries into alleged criminal activities conducted by (a) a grand jury, (b) a State's Attorney pursuant to Code, Criminal Procedure Article, § 15-108, or (c) the State Prosecutor pursuant to Code, Criminal Procedure Article, § 14-110. Title 5 of these rules does not apply to circuit court procedures relating to criminal investigations.

## Nearby sections

- [Md. Rule 4-601 Rule 4-601. Search Warrants](https://www.frixlaw.com/law-library/statutes/SRULES_MD_T4_R4_601.md)
- [Md. Rule 4-601.1 Rule 4-601.1. Application for Law Enforcement Court Order](https://www.frixlaw.com/law-library/statutes/SRULES_MD_T4_R4_601_1.md)
- [Md. Rule 4-602 Rule 4-602. Emergency Orders Pursuant to Code, Criminal Procedure Article, § 11–110.1](https://www.frixlaw.com/law-library/statutes/SRULES_MD_T4_R4_602.md)
- [Md. Rule 4-611 Rule 4-611. Interception of Wire or Oral Communications](https://www.frixlaw.com/law-library/statutes/SRULES_MD_T4_R4_611.md)
- [Md. Rule 4-612 Rule 4-612. Order for Cell Site Simulator or Electronic Device Location Information](https://www.frixlaw.com/law-library/statutes/SRULES_MD_T4_R4_612.md)
- [Md. Rule 4-613 Rule 4-613. Order for Forensic Genetic Genealogical DNA Analysis and Search](https://www.frixlaw.com/law-library/statutes/SRULES_MD_T4_R4_613.md)
- [Md. Rule 4-621 Rule 4-621. Correction of Clerical Mistakes](https://www.frixlaw.com/law-library/statutes/SRULES_MD_T4_R4_621.md)
- [Md. Rule 4-631 Rule 4-631. Compelling Testimony or Documents on the Condition of Immunity](https://www.frixlaw.com/law-library/statutes/SRULES_MD_T4_R4_631.md)
- [Md. Rule 4-632 Rule 4-632. Record of Assertion of Spousal Privilege](https://www.frixlaw.com/law-library/statutes/SRULES_MD_T4_R4_632.md)
- [Md. Rule 4-641 Rule 4-641. Criminal Investigation—Applicability](https://www.frixlaw.com/law-library/statutes/SRULES_MD_T4_R4_641.md)
- [Md. Rule 4-642 Rule 4-642. Secrecy](https://www.frixlaw.com/law-library/statutes/SRULES_MD_T4_R4_642.md)
- [Md. Rule 4-643 Rule 4-643. Subpoena](https://www.frixlaw.com/law-library/statutes/SRULES_MD_T4_R4_643.md)
- [Md. Rule 4-644 Rule 4-644. Record and File](https://www.frixlaw.com/law-library/statutes/SRULES_MD_T4_R4_644.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/SRULES_MD_T4_R4_641. Check the current official text before relying on it. Not legal advice.