CPC Corporation, who was contracting Front Altair, reported that it may have been hit by a torpedo at around 04:00 GMT on June 13.[17][16] According to the U.S. Navy, distress calls from the Front Altair was received at 02:12 GMT (06:12 local time) and from the Kokuka Courageous at 03:00 GMT (07:00 local time).[3] Both ships caught fire, but Frontline and Kokuka Sangyo, the respective owners of the two vessels, reported that all crew members from both ships had successfully evacuated.[4] Iranian News Agency (IRNA) initially reported that Front Altair had sunk, but the statement was later denied by a Frontline spokesman.[19] Other reports suggested that the attacks may have involved limpet mines.[6][20] Iran reported that they had rescued all 44 crew members of both vessels and taken them to Iran.[20] However, the United States Navy responded to assist both vessels after the attack and reported having rescued some of the crew.[3][20] A Dutch vessel rescued 21 people from Kokuka Courageous.