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All 5 on Titanic submersible dead after 'catastrophic' implosion

(UPDATE) ALL five people aboard a submersible that went missing near the wreck of the Titanic died — likely in an instant — when their vessel suffered what the US Coast Guard said Thursday was a 'catastrophic implosion' in the ocean depths.

The somber announcement ended a multinational search-and-rescue operation that captivated the world since the tiny tourist craft disappeared in the North Atlantic four days ago.