CNN reported on Thursday, citing a memo it obtained on this matter, that debris was found in the area where the missing OceanGate tourist submersible was lost in the North Atlantic Ocean. 

According to the memo, experts have ruled that the debris is part of the external body of the Titan submarine, noting that the search is still ongoing. 

Earlier today, the US coast guard said that debris was found in the search area for Titan, and experts were currently assessing the nature of the objects. 

OceanGate’s submarine was lost on Sunday during an expedition to the Titanic wreckage, located about 900 miles east of Cape Cod in the North Atlantic and at a depth of approximately 13,000 feet.

Read more: 'Banging' sounds heard during search for missing Titanic submarine

OceanGate Expeditions began transporting small crews of "citizen scientists" in a five-person mini-sub for $125,000 per person two years ago.

Oceangate had scheduled an eight-day, seven-night excursion to the disaster for June 12-20, according to the company's website.

Six tourists had planned to leave and return to St John's, Newfoundland, Canada.

The submarine has a capacity for five people and an oxygen supply that can last for 96 hours.

The US Coast Guard said that if the submarine is not damaged and still operating, it should have run out of oxygen by Thursday morning.

Read more: Missing sub near Titanic has 40 hours of oxygen left