§ 14-33. Witness immunity.

When in the judgment of the city attorney the testimony of any witness or the production of any books, papers, or other evidence by any witness in any case or proceeding before the municipal court involving any violation of the laws of the city is necessary in the public interest, the city attorney may request that the judge instruct the witness to testify or produce evidence subject to the provisions of this section concerning witness immunity. Upon order of the judge, the witness shall not be excused from testifying or from producing books, papers, or other evidence on the grounds that the testimony required of the witness may tend to incriminate the witness or subject the witness to a penalty or forfeiture; but 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 the witness is compelled, after having claimed his or her privilege against self-incrimination to testify or produce evidence, nor may testimony so compelled be used as evidence in any criminal proceeding against the witness in any court, except a prosecution for perjury or contempt committed while giving testimony or producing evidence under compulsion as provided in this section.