# Conn. Gen. Stat. § 54-47a: Sec. 54-47a. Compelling testimony of witness. Immunity from prosecution > Connecticut · Statutes · In force URL: https://www.frixlaw.com/law-library/statutes/STATE_CT_T54_C960_S54-47a ## Section - **Citation:** Conn. Gen. Stat. § 54-47a - **Heading:** Sec. 54-47a. Compelling testimony of witness. Immunity from prosecution - **Jurisdiction:** Connecticut - **Kind:** Statutes - **Status:** In force - **Text as of:** August 14, 2026 - **Source:** Compiled text - **Location:** Connecticut Code / Title 54 / Chapter 960 / Section 54-47a ## Text (b) Upon the issuance of the order such witness shall not be excused from testifying or from producing books, papers or other evidence in such case or proceeding on the ground that the testimony or evidence required of him may tend to incriminate him or subject him to a penalty or forfeiture. No such witness may be prosecuted or subjected to any penalty or forfeiture for or on account of any transaction, matter or thing concerning which he is compelled to testify or produce evidence, and no testimony or evidence so compelled, and no evidence discovered as a result of or otherwise derived from testimony or evidence so compelled, may be used as evidence against him in any proceeding, except that no witness shall be immune from prosecution for perjury or contempt committed while giving such testimony or producing such evidence. Whenever evidence is objected to as inadmissible because it was discovered as a result of or otherwise derived from compelled testimony or evidence, the burden shall be upon the person offering the challenged evidence to establish a source independent of the compelled testimony or evidence. Section to be used to secure testimony for prosecution; as there is no other statutory authority granting immunity, there is no basis for granting immunity to witness for the defense. 170 C. 206. Cited. 172 C. 542, 561. Assistant state's attorney has authority pursuant to this section, in conjunction with Sec. 51-278, to make applications for immunity grants. 174 C. 16. One who has been granted immunity is not incompetent witness, although fact of immunity may bear upon weight given testimony of witness granted immunity. Id., 287. Cited. 191 C. 670; 201 C. 559; 202 C. 541; 204 C. 259. Defendant lacks standing to challenge procedure by which a witness has been immunized. 206 C. 203. Cited. 207 C. 98; 213 C. 66; 221 C. 625. A grant of immunity pursuant to section includes both use immunity and transactional immunity. 298 C. 404. Cited. 16 CA 679; 17 CA 395; 20 CA 447; 33 CA 521. In the absence of special circumstances, once the state grants immunity under section, it lacks the power to revoke that immunity. 168 CA 847; judgment affirmed, see 334 C. 431. Grant of immunity from prosecution for any perjury witness may commit while testifying is improper and in violation of public policy. 188 CA 813. Cited. 45 CS 1. ## Nearby sections - [Conn. Gen. Stat. § 54-45 Sec. 54-45. When grand jury is required. Selecting grand jury. Alternate grand jurors.](https://www.frixlaw.com/law-library/statutes/STATE_CT_T54_C960_S54-45.md) - [Conn. Gen. Stat. § 54-45a Sec. 54-45a. Record of grand jury proceedings. Transcripts.](https://www.frixlaw.com/law-library/statutes/STATE_CT_T54_C960_S54-45a.md) - [Conn. Gen. Stat. § 54-46 Sec. 54-46. Prosecution on complaint or information.](https://www.frixlaw.com/law-library/statutes/STATE_CT_T54_C960_S54-46.md) - [Conn. Gen. Stat. § 54-46a Sec. 54-46a. Probable cause hearing for persons charged with crimes punishable by death, life imprisonment without possibility of release or life imprisonment.](https://www.frixlaw.com/law-library/statutes/STATE_CT_T54_C960_S54-46a.md) - [Conn. Gen. Stat. § 54-47a Sec. 54-47a. Compelling testimony of witness. Immunity from prosecution.](https://www.frixlaw.com/law-library/statutes/STATE_CT_T54_C960_S54-47a.md) - [Conn. Gen. Stat. § 54-47aa Sec. 54-47aa. Ex parte order to compel disclosure of or direct application to carrier or provider for certain telephone and Internet records.](https://www.frixlaw.com/law-library/statutes/STATE_CT_T54_C960_S54-47aa.md) - [Conn. Gen. Stat. § 54-47b Sec. 54-47b. Investigatory grand jury. Definitions.](https://www.frixlaw.com/law-library/statutes/STATE_CT_T54_C960_S54-47b.md) - [Conn. Gen. Stat. § 54-47c Sec. 54-47c. Application for investigation into commission of crime.](https://www.frixlaw.com/law-library/statutes/STATE_CT_T54_C960_S54-47c.md) - [Conn. Gen. Stat. § 54-47d Sec. 54-47d. Appointment of investigatory grand jury. Duration and scope of investigation.](https://www.frixlaw.com/law-library/statutes/STATE_CT_T54_C960_S54-47d.md) - [Conn. Gen. Stat. § 54-47e Sec. 54-47e. Sealing of order and application. Summary of scope of investigation. Disclosure.](https://www.frixlaw.com/law-library/statutes/STATE_CT_T54_C960_S54-47e.md) - [Conn. Gen. Stat. § 54-47f Sec. 54-47f. Conduct of investigation. Testimony of witnesses.](https://www.frixlaw.com/law-library/statutes/STATE_CT_T54_C960_S54-47f.md) - [Conn. Gen. Stat. § 54-47g Sec. 54-47g. Finding and record of investigation. Disclosure. Hearing. Access to testimony.](https://www.frixlaw.com/law-library/statutes/STATE_CT_T54_C960_S54-47g.md) - [Conn. Gen. Stat. § 54-47h Sec. 54-47h. Report.](https://www.frixlaw.com/law-library/statutes/STATE_CT_T54_C960_S54-47h.md) - [Conn. Gen. Stat. § 54-47i Sec. 54-47i. Authority of investigation ordered prior to October 1, 1985.](https://www.frixlaw.com/law-library/statutes/STATE_CT_T54_C960_S54-47i.md) --- Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/STATE_CT_T54_C960_S54-47a. Check the current official text before relying on it. Not legal advice.