5 C.F.R. § 2638.106
An agency's Inspector General has authority to conduct investigations of suspected violations of conflict of interest laws and other government ethics laws and regulations. An Inspector General is responsible for giving due consideration to a request made pursuant to section 403 of the Ethics in Government Act of 1978 (the "Act") by the Office of Government Ethics for investigation of a possible violation of a government ethics law or regulation. Inspectors General provide the Office of Government Ethics notification of certain referrals to the Department of Justice, pursuant to § 2638.206 . Inspectors General may consult with the Director for legal guidance on the application of government ethics laws and regulations, except that the Director may not make any finding as to whether a provision of title 18, United States Code, or any criminal law of the United States outside of such title, has been or is being violated. Nothing in this section will be construed to limit or otherwise affect the authority of an Inspector General under section 6 of the Inspector General Act of 1978, as amended, including the authority under section 6(a)(2) to make such investigations and reports relating to the administration of the programs and operations of the applicable establishment as are, in the judgment of the Inspector General, necessary or desirable.
5 C.F.R. §2638.106