Okla. Stat. tit. 51, § 51-61: Witness - Evidence - Process

The clerk of such court, at the request of the chairman of the

Board of Managers, or of the accused, shall issue subpoena for

witnesses, and for the production of books or papers, and in case of

disobedience of any such process, the court may order its clerk to

issue process for the arrest of such witness or for the seizure of

books or papers. All process shall be served or executed by the

marshal or his assistant, or by any sheriff or deputy in the several

counties of the state.