The Titan submersible's five passengers are believed to have perished, according to OceanGate, the vessel's owner.
The five men were "true explorers who shared a distinct spirit of adventure," the company claimed in a statement.
Early on Thursday morning, according to the Coast Guard, a debris field was found close to the Titanic's wreck. .
On Sunday, the ship vanished.
Along with British-Pakistani businessman Shahzada Dawood, 48, his son Suleman, 19, and British businessman Hamish Harding, 58, the men on board the sub included Stockton Rush, the 61-year-old CEO of OceanGate.
Paul-Henry Nargeolet, a 77-year-old former French navy diver and renowned explorer, was the fifth person on board.
The debris is thought to be consistent with the Titan submersible, according to Rear Adm John Mauger of the US Coast Guard, who stated this at a news conference on Thursday.
It is unknown what caused the Titan to be destroyed.
After the ship vanished, US, Canadian, British, and French forces joined a massive international search operation.
OceanGate stated in their statement that they value "their commitment to finding these five explorers, and their days and nights of tireless work in support of our crew and their families."