Oregon Revised Statutes Financial Institutions § 707.735

(1) If an officer or director of a banking institution has reason to believe that a person has violated any provision of law that has resulted or could result in loss to the banking institution and for which criminal prosecution is provided, the officer or director shall give the information relative to the violation to the appropriate federal, state or local law enforcement officer having jurisdiction of the violation, and to the Director of the Department of Consumer and Business Services.

(2) If the matter is referred to a district attorney or to the Attorney General, such officer promptly shall investigate the violation and institute such action against the person as the information and investigation requires or justifies. The cost of the investigation and action shall be paid by the county or state in the manner in which other criminal actions are paid.