Two men have been arrested after a fire broke out in a cabin on a ferry in the North Sea off the Yorkshire coast.
Four crew members and two passengers were airlifted to hospital suffering from smoke inhalation.
The King Seaways, which was sailing from Newcastle to Amsterdam, had 946 passengers and 127 crew members on board.
Northumbria Police said a 26-year-old man has been arrested on suspicion of arson.
A 28-year-old man has been arrested on suspicion of affray.
The vessel, which was operated by ferry company DFDS Seaways, was 30 miles from land when the fire broke out.
It was forced to turn around and arrived back in Newcastle early this morning.
Police questioned passengers and crew about the incident before they were allowed to disembark.