A small submarine gone missing in the Atlantic Ocean, the BBC reported. It used to take people to see the wreckage of the Titanic. It was not immediately known whether people were on the submarine when it went missing.
It is also not clear where in the ocean the submersible may have gone missing.
The Boston Coastguard told medias that a search and rescue operation was under way off the coast of Newfoundland.
The submersible is operated by OceanGate Expeditions, a company that offers visits to the wreck, which lies on the ocean floor in 12,500 feet of water about 370 miles off the coast of Newfoundland.
The Titanic sank into the Atlantic in 1912 during its maiden voyage after hitting an iceberg. Over 1,500 died when the Titanic sank. The wreckage of the ship was discovered in 1985, deep at the bottom of the Atlantic ocean.