The Japanese supertanker M. STAR carrying 270,000 tons of oil was damaged by an explosion Wednesday, July 28, caused by a suspected attack in Omani territorial waters near the  Strait of Hormuz, which passes Iran and Oman. One lifeboat was blown off the ship and a hole driven in its starboard hatches. A crew member was slightly injured, but there was no oil leak.

The spokesperson for the tanker's owners Mitsui O.S.K. Lines Ltd said: "We believe it's highly likely an attack from the outside, maybe a terrorist incident. There is nothing that could cause a spontaneous explosion in that part of the vessel."

But the most striking feature of the incident, noted by DEBKAfile's military and intelligence sources, is the unusual degree of assent between US Navy and Iranian officials that the damage to the supertanker was caused by an explosion by an unknown hand.