(a) In connection with an investigation of an alleged offense against public administration, the public integrity unit may issue a subpoena to compel the production, for inspection or copying, of relevant evidence that is in this state.
(b) A subpoena may be served personally or by certified mail.
(c) If a person fails to comply with a subpoena, the public integrity unit, acting through the general counsel of the department, may file suit to enforce the subpoena in a district court in this state. On finding that good cause exists for issuing the subpoena, the court shall order the person to comply with the subpoena. The court may punish a person who fails to obey the court order.