The commissioner may refer any evidence available concerning any violation of this law or of any rule or order hereunder to the Attorney General or the district attorney of the county in which the violation occurred, who may, with or without this type of a reference, institute appropriate criminal proceedings under this law. The commissioner and his or her counsel, deputies, or assistants may, upon request of the Attorney General or the district attorney, assist the prosecuting attorney in presenting the law or facts at the trial.