'High priority' given to helicopter crash investigation
24 August 2013 Last updated at 16:28 BST
An investigation is underway into the cause of a helicopter crash off Shetland in which four people died.
14 others were rescued after the Super Puma L2 ditched into the sea west of Sumburgh Airport at about 18:20 on Friday.
Keith Conradi, the Chief Inspector of Air Accidents from the Air Accidents Investigations Branch told Maxine Mawhinney what will happen during the investigation.