UK accident investigators are being sent to Norway after a helicopter crash on Friday killed at least 11 people.
Officials are being deployed to the Nordic country to assist with the crash investigation just off the Norwegian coast.
The aircraft was believed to have been carrying 13 people - including a Briton - from an offshore oil field when it came down near the city of Bergen.
"We were sad to hear of the loss of a helicopter west of Bergen, Norway", AAIB chief inspector Keith Conradi said.
"The Air Accidents Investigation Branch has offered to assist the Accident Investigation Board Norway with their investigation and is deploying a team of inspectors."