Tenn. Code Ann. § 8-6-401: Authority to give oaths and require testimony

The attorney general and reporter, in performing the duties of such office where the state is a party litigant, or there is reasonable cause to indicate it will be a party litigant, is hereby empowered to require any person to testify under oath as to any matter which is a proper subject of inquiry by the attorney general and reporter. The attorney general and reporter, or a designee, is authorized to administer all necessary oaths.