CT Gen Stat § 54-47a (2020)
2020 Connecticut General Statutes|Title 54 - Criminal Procedure|Chapter 960 - Information, Procedure and Bail|Section 54-47a - Compelling testimony of witness. Immunity from prosecution.

 (a) Whenever in the judgment of the Chief State's Attorney, a state's attorney or the deputy chief state's attorney, the testimony of any witness or the production of books, papers or other evidence of any witness (1) in any criminal proceeding involving narcotics, arson, bribery, gambling, election law violations, felonious crimes of violence, any violation which is an offense under the provisions of title 22a, corruption in the executive, legislative or judicial branch of state government or in the government of any political subdivision of the state, fraud by a vendor of goods or services in the medical assistance program under Title XIX of the Social Security Act amendments of 1965, as amended, any violation of chapter 949c, or any other class A, B or C felony or unclassified felony punishable by a term of imprisonment in excess of five years for which the Chief State's Attorney or state's attorney demonstrates that he has no other means of obtaining sufficient information as to whether a crime has been committed or the identity of the person or persons who may have committed a crime, before a court or grand jury of this state or (2) in any investigation conducted by an investigatory grand jury as provided in sections 54-47b to 54-47g, inclusive, is necessary to the public interest, the Chief State's Attorney, the state's attorney, or the deputy chief state's attorney, may, with notice to the witness, after the witness has claimed his privilege against self-incrimination, make application to the court for an order directing the witness to testify or produce evidence subject to the provisions of this section.(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.(1969, P.A. 631, S. 1; P.A. 74-183, S. 140, 291; 74-227, S. 1, 2; P.A. 76-436, S. 539, 681; P.A. 78-96, S. 3–5; P.A. 80-313, S. 6; P.A. 81-104; P.A. 85-611, S. 8; P.A. 87-350, S. 4, 6.)History: P.A. 74-183 replaced circuit court with court of common pleas in accordance with reorganization of the judicial system, effective December 31, 1974; P.A. 74-227 deleted reference to prosecuting attorneys, added references to chief state's attorney, deputy chief state's attorneys, state referees, superior court judges and three-judge panels and extended applicability of provisions to cases involving violation of election laws; P.A. 76-436 deleted references to court of common pleas, reflecting transfer of all trial jurisdiction to superior court, effective July 1, 1978; P.A. 78-96 applied provisions to violations which are offenses under Title 25 provisions; P.A. 80-313 divided section into Subsecs. and made minor wording changes in Subsec. (b); P.A. 81-104 provided that immunity from prosecution may be granted to any witness in a criminal proceeding involving arson or bribery; P.A. 85-611 amended Subsec. (a) to replace reference to repealed Sec. 54-47 with provision that testimony or evidence may be compelled “in any investigation conducted by an investigatory grand jury as provided in sections 54-47b to 54-47g, inclusive”; P.A. 87-350 added provisions re criminal proceeding involving violation of title 22a, corruption in executive, legislative or judicial branch of state government or in government of political subdivision of state, fraud by a vendor of goods or services in the medical assistance program under Title XIX of the Social Security Act amendments of 1965, any violation of chapter 949c or any other class A, B or C felony or unclassified felony punishable by a term of imprisonment in excess of five years for which chief state's attorney or state's attorney demonstrates that he has no other means of obtaining sufficient information as to whether crime has been committed or identity of person who may have committed a crime.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.