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 captain of MV Solong involved in the North Sea oil tanker crash is a Russian national, the shipping company revealed. The US-flagged MV Stena Immaculate was anchored off the Humber Estuary, 10 miles from Hull, when it burst into flames in a fireball after the Portuguese-flagged Solong rammed into it.

Ernst Russ, which owns Solong, confirmed the vessel’s captain had been arrested by Humberside Police on suspicion of gross negligence manslaughter after a crew member was presumed dead when a search-and-rescue operation was ended on Monday evening.

The captain of the container ship Solong, which crashed with another ship in the North Sea, is a Russian national, it has emerged.

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,

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,