A stretch of the main A149 coast road in north Norfolk will be closed from Salthouse to Cley probably until Monday, after the helicopter crash in which four airmen died.
A Norfolk police spokesman said: 'The road closure is on the A149 from Salthouse, near the Dun Cow pub, to the junction with Old Woman's Lane in Cley. Diversions are in place including via the A148.'
In a briefing at lunchtime, Ch Supt Bob Scully said they were continuing to work with the Ministry of Defence and US Air Force as they investigated last night's accident.
The victims of the crash will not be named until 24 hours after next of kin have been notified.
The site being examined was described as being 'the size of a football pitch', and a strict cordon has been set up to keep out members of the public while bullets from the crashed Pave Hawk HH-60 helicopter remain scattered across the scene.
Police have thanked the public for following advice to avoid the area.
Two USAF Pave Hawk HH60 helicopters were involved in the training activity last night and following the crash the second aircraft landed nearby to assist, and remains at the scene.
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