Police have detained a man about a collision between a tanker and a container ship in the North Sea.

The manager of the container ship told ABC News that the ship’s master was arrested following Monday’s collision in the North Sea with a moored oil tanker. While the U.S.-flagged oil tanker Stena Immaculate was anchored on the eastern coast of the United Kingdom, close to Hull, England, the Portuguese container ship Solong collided with it, setting both ships on fire, officials reported Monday.