Ohio Rev. Code § 3770.04
For the purpose of conducting any study or investigation, the state lottery commission may direct that public hearings be held at a time and place, prescribed by the commission, in accordance with section 121.22 of the Revised Code. Hearings shall be held in Columbus, except that if the commission determines that another location is more convenient for those concerned, it may move the hearing to another location within the state. The commission shall give notice of all public hearings in such manner as will give actual or constructive notice to all interested parties.
In the discharge of any duties imposed by this chapter, the state lottery commission may require that testimony be given under oath and administer such oath, issue subpoenas compelling the attendance of witnesses and the production of any papers, books, and accounts, and cause the deposition of any witness residing within the state. In the event of the refusal of any person to comply with the terms of a subpoena issued by the commission or refusal to testify on matters about which he may lawfully be questioned, the prosecutor of the county in which such person resides, upon the petition of the commission, shall bring a proceeding for contempt against such person in the court of common pleas of that county.
R.C. §3770.04