The five persons who boarded the submersible were listed as, Hamish Harding (Britain), Paul Henri Nargeoloet (France) British-Pakistani businessman Shahzada Dawood, and his son Suleman; and American Stockton Rush, who co-founded OceanGate, the company that created the submarine.
The US stated that the development is a ‘catastrophic loss’ because all the passengers lost their lives.
The vessel was said to have gone missing in the North Atlantic Ocean.
Having been under water since Sunday, the vessel was bound to have technical problems because its oxygen reserve was to last for four days.
After days of search, the US Coast Guard said the debris of the vessel was located through a remote-controlled underwater search vehicle.
The Pakistan government has sent condolences to the family of British-Pakistan nationals who boarded the Titan submersible.