A search is under way for a submersible which has gone missing in the Atlantic Ocean while taking visitors on tours of the Titanic wreck.
The Joint Rescue Coordination Centre in Halifax, Nova Scotia, said a Canadian military aircraft and a Canadian Coast Guard vessel are assisting the search.
The Titanic shipwreck sits 12,500ft below the ocean surface, approximately 380 nautical miles from shore.
OceanGate did not confirm how many were onboard or if there were any tourists among the missing.
The Titanic sank in 1912 after hitting an iceberg while on its maiden voyage from Southampton, England to New York.
The US passed the Titanic Maritime Memorial Act in 1986, marking the RMS Titanic as an international maritime memorial, allowing for reasonable research, exploration and appropriate salvage activities.
So long as the research or exploration does not alter or disturb the Titanic, people may view it or research it. »