45 CFR § 681.4 - Who investigates program fraud?
The Inspector General, or his or her designee, is the investigating official responsible for investigating allegations that a false claim or statement has been made. In this regard, the Inspector General has authority under PFCRA and the Inspector General Act of 1978 (5 U.S.C. App. 3), as amended, to issue administrative subpoenas for the production of records and documents.