All aboard Titan submersible presumed dead

All five people aboard the Titan submersible now are presumed dead after a search, according to the U.S. Coast Guard.

Officials discovered debris in the search area, with the Coast Guard noting it was consistent with a "catastrophic implosion."

The OceanGate Expeditions vessel that was en route to the wreckage of the Titanic had the following on board: Stockton Rush, the company's CEO; British billionaire Hamish Harding; French dive expert Paul-Henri Nargeolet; Pakistani businessperson Shahzada Dawood; and Dawood's son, Suleman.

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