Most of the jet fuel onboard the U.S.-flagged tanker Stena Immaculate that was hit by a container ship in a collision off Britain's coast remains contained and only two of the vessel's 18 fuel tanks have leaked,

The captain of the cargo ship MV Solong, which rammed into a US oil tanker off the British coast, has been identified as a Russian national

Ernst Russ AG, the German owner of the Portuguese-flagged Solong, told Reuters the 59-year-old captain, who was arrested on suspicion of gross negligence manslaughter following the incident Monday morning, is Russian.

The revelation comes as the owner of the Solong, Ernst Russ, confirmed the captain who has been arrested by Humberside Police is a Russian national. The 59-year-old man arrested on suspicion of gross negligence manslaughter after a collision between a tanker and a cargo ship in the North Sea remains in custody, police have said.

Fears of an environmental disaster eased on Wednesday, two days after a container ship ploughed into a stationary U.S. fuel tanker off northeast England, as the vessel's owner said the detained captain was a Russian national.

The container ship Solong collided with the Stena Immaculate, a vessel that had been chartered by the U.S. military.

The fire is still burning on the Solong container ship, which was in a collision with the Stena Immaculate oil tanker in the Humber Estuary The captain of a cargo ship has been arrested after it collided with an oil tanker in the North Sea.