Limpet mines used in tanker attacks 'strikingly' like Iran's, US says
That contradicts the ship's owner, which quoted eyewitnesses aboard who saw two "flying objects" before the 13 June attack.
Officials showed debris and a magnet recovered, they said, from the tanker Kokuka Courageous to reporters at the US navy's 5th Fleet base near Fujairah, in the United Arab Emirates (UAE).
Iran's Revolutionary Guard left them behind when they removed an unexploded limpet mine after the attack, the officials claim.
Commander Sean Kido, of the US Navy's 5th Fleet, said the damage done to the vessel on Thursday was "not consistent with an external flying object hitting the ship".