Section 18676 Of Article 2. Investigations And Hearings From California Government Code >> Division 5. >> Title 2. >> Part 2. >> Chapter 2. >> Article 2.

. When ordered to do so, a witness shall not be excused from testifying or from producing any documentary evidence in that investigation or hearing upon the ground that the testimony or documentary evidence required of the witness may tend to incriminate or subject the witness to penalty or forfeiture, provided the witness has been granted use and derivative use, or transactional immunity by the appropriate law enforcement authority.