Ohio Revised Code Title III. Counties § 321.40

A person appointed, in pursuance of any law of this state, to examine or inspect a county treasury or perform any other duty, may exercise all authority to issue subpoena and compulsory process and direct their service by any constable or sheriff, compel the attendance of witnesses and the production of books and papers before him at any designated place, administer oaths, and punish for disobedience of subpoena or for refusal to be sworn or answer as a witness, which is conferred upon courts or officers authorized to take depositions.