(a) The commissioner may refer the evidence that is available concerning any violation of this division or of any rule or order adopted under this division to the district attorney of the county in which the violation occurred. The district attorney may, with or without the commissioner’s referral, institute criminal proceedings under this division. The commissioner and his or her counsel, deputies, or assistants may, upon request of the district attorney, assist the district attorney in presenting the law or facts at the trial.
(b) After an examination, investigation, or hearing under this division, if the commissioner deems it of public interest or advantage, he or she may certify a record to the proper prosecuting official of the county or city in which the act complained of, examined, or investigated occurred.