15 C.F.R. § 758.8
(b) ordering return or unloading of shipment. Where there are reasonable grounds to believe that a violation of the Export Administration Regulations has occurred, or will occur, with respect to a particular export from the United States, BIS, the Office of Export Enforcement, or the U.S. Customs Service may order any person in possession or control of such shipment, including the exporting carrier, to return or unload the shipment. Such person must, as ordered, either:
(d) Notification. Upon discovery by any person included within the term “exporting carrier,” as defined in paragraph (a) of this section, that a violation of the EAR has occurred or will occur with respect to a shipment on board, or otherwise in the possession or control of the carrier, such person must immediately notify both: