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 Solong cargo ship who was arrested after crashing into an oil tanker off the English coast is a Russian national, the vessel’s owner said Wednesday, as maritime experts search for answers.

The Russian captain of a cargo ship involved in Monday's crash with a tanker in the North Sea off the coast of England was charged Friday with gross negligence manslaughter, UK police said.

The tanker that was hit at anchor off the coast of England in the North Sea was under contract by Military Sealift Command in support of the Defense Logistics Agency, USNI News has learned. The U.S.-flagged MV Stena Immaculate was at anchor when Portugeuse-flagged container ship MV Solong struck the tanker at about 5:48 a.

British police said on Friday they were granted more time to question the 59-year old Russian captain of a container ship that crashed into a U.S. tanker earlier this week.

The captain arrested in a crash into a U.S. flagged tanker off the coast of England is a Russian national, the owner of the vessel said on Wednesday.

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.