Underwater explorer Barry Clifford says he's confident he's discovered a shipwreck, believed to be the remains of Christopher Columbus' legendary ship, the Santa Maria.
But Clifford now says there's evidence that the ship has been looted.
Photos from an examination of a shipwreck taken off the coast of Haiti in 2003 show the outline of a 15th century cannon, which Clifford says is proof that the remains are from Columbus' legendary ship.
The problem: when he and his colleagues returned to the site, they discovered the cannon and other items may have been stolen.
Who took these artifacts? Is this the Santa Maria?
OutFront, Barry Clifford, the underwater explorer who led the team that discovered the shipwreck, and Sebastian Clarke, an appraiser with the long-running PBS series 'Antiques Roadshow' and CNN's Miguel Marquez.