An investigation shall be initiated only upon issuance of an order by the Board of Directors; or by the General Counsel, the Director of the Division of Risk Management Supervision, the Director of the Division of Depositor and Consumer Protection, or their respective designees. The order shall indicate the purpose of the investigation and designate FDIC's representative(s) to direct the conduct of the investigation. Upon application and for good cause shown, the persons who issue the order of investigation may limit, quash, modify, or withdraw it. Upon the conclusion of the investigation, an order of termination of the investigation shall be issued by the persons issuing the order of investigation.
12 C.F.R. §308.145