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 U.S.-flagged tanker Stena Immaculate collided with the Portuguese-flagged Solong container ship, resulting in the leakage of jet fuel. Two of the ship's 18 fuel tanks have leaked, but the majority of the fuel remains contained.

U.K. police say the Solong cargo ship's captain, identified by the vessel's owner as a Russian national, was detained on suspicion of negligent manslaughter.

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 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.

On Monday, in a tragic incident, a Portuguese-flagged cargo vessel called Solong, carrying toxic chemicals, crashed into a US-flagged tanker carrying jet fuel for the US Army off the UK coast. According to the reports quoting Solong’s owner,

The captain of the Solong cargo ship has been detained following a collision with a US-flagged tanker, the Stena Immaculate, off the English coast. The incident, which occurred in the North Sea, has sparked concerns over environmental damage due to a jet fuel spill.