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 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.

A port official said he was told the North Sea collision produced "a massive fireball" and the cargo ship's owner said one crew member was missing.

An oil tanker reportedly on fire in the North Sea after colliding with a cargo vessel. Lifeboats and a coastguard helicopter were called to the collision in the Humber Estuary on Monday morning, believed to involve a US-flagged tanker called the MV Stena Immaculate.

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.

Aerial footage shows damage after a cargo ship collided with a U.S. tanker off the coast of England. (Credit: Reuters)

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,