The Coast Guard stated in an afternoon news briefing that the debris discovered Thursday close to the Titanic wreckage is from the submersible that had been missing for four days and that all five aboard had died.

Rear Adm. John Mauger, head of the First Coast Guard District, said that the debris “is consistent with a catastrophic implosion of the vessel.” According to him, the debris was discovered at the sea floor 1,600 feet from the Titanic wreckage, and the families of the deceased have been informed.

Also Read: Did OceanGate Titan Submersible that imploded have a black box?

A friend of the passengers and dive expert David Mearns provided an update to BBC, stating that “a landing frame and a rear cover from the submersible” are among the debris. This confirms that an implosion may have occurred, explaining why contact with the sub hadn’t been established and why it has been so challenging to find it despite nonstop rescue efforts.

Now, N3RO News on Twitter has posted a video that demonstrates how the Titan submersible might have imploded. Watch it here:

Also Read: How much did OceanGate Titan submersible hunt mission cost and will USA, Canada, France pay for it?

There are a variety of theories being put up to explain its disappearance, but one unfortunate possibility is that the submersible imploded, or violently fell inward, as soon as it came into contact with the extraordinarily high water pressure below sea level.

According to Stefan Williams, a professor of marine robotics at the University of Sydney, even the tiniest flaw in the Titan’s design would have prevented it from withstanding the intense pressure. Williams stated in a conversation with the Guardian that he thought the implosion, if it had occurred, happened in a very brief period of time, giving no one much time to come up with a solution.

Also Read: Can Titan Five’s bodies be recovered from OceanGate submersible after it imploded?

In a statement, OceanGate, the firm that ran the Titan submersible and whose CEO, Stockton Rush, operated the vessel, said that the passengers “have sadly been lost.”

The other four alleged victims are reportedly Pakistani businessman Shahzada Dawood and his son Suleman Dawood, British explorer Hamish Harding, and French deep-sea explorer and Titanic expert Paul-Henri Nargeolet.