Titanic sub crew believed to have died instantly in ‘catastrophic implosion’

Debris field spotted by ROV scouring seabed consistent with the catastrophic loss of the pressure chamber', US Coast Guard says

• Titanic sub tragedy - latest updates

Five crew members onboard the submersible Titan were probably killed instantly in a catastrophic implosion" as it descended to the wreck of the Titanic two miles below the surface of the Atlantic ocean, US Coast Guard officials announced on Thursday.

A large debris field containing multiple sections of the vessel were spotted earlier in the day by a remotely operated vehicle (ROV) scouring the seabed near the Titanic wreck site 400 miles south of St John's, Newfoundland, officials said at an afternoon press conference in Boston.