The Titanic-bound submersible that went missing on Sunday with five people on board suffered a “catastrophic implosion,” killing everyone on board, US Coast Guard Rear Adm. John Mauger said Thursday. A remotely operated vehicle found the tail cone about 1,600 feet away from the bow of the shipwreck, Mauger said.

Who was on board: Tour company OceanGate Expeditions said the five passengers were Hamish Harding, Shahzada Dawood and his son Suleman Dawood, Paul-Henri Nargeolet and OceanGate CEO Stockton Rush.

About the trip: The Titan began its descent Sunday to explore the wreckage of the Titanic, located about 13,000 feet below sea level in the North Atlantic Ocean.

A Defense Department spokesperson said it is "very sad to hear" about the statement by OceanGate that it believes the individuals on the company's submersible have been lost.

“I was not tracking that statement, so breaking news here in the briefing room and very sad to hear that,” said Pentagon Press Secretary Brig. Gen. Patrick Ryder after CNN’s Natasha Bertrand informed him of the statement at a press briefing.

Ryder said the Defense Department’s focus would be “on supporting the Coast Guard and their efforts as we go forward.”

https://edition.cnn.com/americas/live-news/titanic-missing-sub-oceangate-06-22-23/index.html