California Code, Business and Professions Code - BPC § 19822

(a) All files, records, reports, and other information in possession of any state or local governmental agency that are relevant to an investigation by the department conducted pursuant to this chapter shall be made available to the department as requested. However, any tax information received from a governmental agency shall be used solely for effectuating the purposes of this chapter. To the extent that the files, records, reports, or information described in this section are confidential or otherwise privileged from disclosure under any law or exercise of discretion, they shall not lose that confidential or privileged status for having been disclosed to the department.

(b) All files, records, reports, and other information pertaining to gambling matters in the possession of the department shall be open at all times to inspection by the members of the commission.