N.D. Cent. Code § 44-08-18
Every elected and appointed state official and all state employees employed by or administering any agency, department, board, commission, or other governmental organization with offices located in the state capitol building are responsible for the safekeeping and return of keys allowing entrance to any of such offices or to the capitol building proper. Each official or employee shall, upon or prior to termination of employment in the state capitol, return any and all keys which may have been issued to the official or employee by the highway patrol or by the legislative council to the person in charge of such keys in the office or department in which the official or employee was employed. The person in charge, or the person's designee, shall see to the return of the keys to the highway patrol in a manner provided by rules and regulations which must be promulgated by the highway patrol. Failure to return a key must be handled as provided in section 54-06-15.
N.D.C.C. § 44-08-18