It is the duty of each county attorney or city attorney to whom the commissioner reports a violation of this chapter to cause appropriate proceedings to be instituted in the proper courts without delay and to be prosecuted in the manner required by law. Before a violation of this chapter is reported to a county attorney or city attorney for the institution of a criminal proceeding, the person against whom the proceeding is contemplated must be given appropriate notice and an opportunity to present views before the commissioner or the commissioner’s designated agent, either orally or in writing, in person, or by attorney, with regard to the contemplated proceeding.