A Maine treasure hunter says he has discovered a WWII-era shipwreck filled with platinum, now worth $3bn (£1.9bn).
Greg Brooks of Sub Sea Research says a wreck sitting 50 miles (80km) off the US Atlantic coast is the SS Port Nicholson, sunk in 1942.
The Port Nicholson, a British merchant ship, was torpedoed by a German U-boat in an attack that killed six people.
Some have expressed doubts the wreck holds platinum, and maritime law would complicate ownership claims.
Anthony Shusta, an attorney representing the British government, says it is unclear if the ship ever carried platinum.
We’re still researching what was on the vessel, Mr Shusta told the Associated Press news agency.
Our initial research indicated it was mostly machinery and military stores.
The United Kingdom will wait until salvage operations begin before deciding whether to file a claim on the cargo, he added