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.

British police are investigating the cause behind a crash between a cargo vessel and an anchored US fuel tanker.

On Monday morning, about 13 miles off the coast of East Yorkshire, the Solong sailed into the US-registered tanker Stena Immaculate, which was carrying fuel for the US Navy. Fires broke out on board both vessels,

The master of a container ship has been arrested after it collided with an anchored oil tanker Monday in the North Sea, the manager of the container vessel confirmed to ABC News. The Portuguese container ship Solong struck the U.

The police in Britain detained the ship’s captain on suspicion of gross negligence after it crashed into an oil tanker that was being operated by the U.S. Navy.

Motin was the master of the Ernst Russ-operated 804-teu Solong (built 2005) that collided with a Stena Bulk tanker on Monday off the northeast English coast. UK prosecutors named the seafarer who died in the collision as Mark Angelo Pernia, a Filipino crew member on the Portuguese-flagged Solong.

The detained captain of a cargo ship which struck a tanker chartered by the US military is a Russian national, the owners of the container vessel said on Wednesday, as investigators sought to determine why the North Sea crash happened.

A container ship hit a stationary U.S.-flagged oil tanker on Monday, forcing the crews to abandon ship. A search for a missing crew member ended Monday night.