The captain of the Solong cargo ship who was arrested after crashing into an oil tanker off the coast of England is a Russian national, the ship’s owner Ernst Russ said Wednesday.

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.

British authorities have arrested the captain of a cargo ship as they investigate the cause of a fatal crash between the vessel and an oil tanker shipping jet fuel for the U.S. military in the North Sea.