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.

LONDON (AP) — The captain of a cargo ship that collided with a U.S. tanker is a Russian national who remains in U.K. police custody, the vessel’s owner said Wednesday, as it emerged that the ship failed several safety checks last year.

The captain of a cargo ship that collided with an oil tanker in the North Sea has appeared in court charged with gross negligence manslaughter over the death of a crew member. The Portuguese-flagged Solong and US-registered tanker Stena Immaculate crashed off the East Yorkshire coast at about 10:00 GMT on Monday.