Police teams are searching a wide area near the scene of the helicopter crash which has claimed four lives on the Norfolk border with Suffolk.
Inspector Louis Provart from Norfolk Police is leading the investigation.
He told reporters the emergency services are working together in difficult conditions to secure the scene and carry out an initial investigation into the circumstances of the crash.
Experts scouring the wreckage of the helicopter crash in Gillingham, Norfolk will begin recovering crash debris today.
Air accident investigators have begun work to find out how a helicopter crashed close to the Norfolk and Suffolk border last night.
Police have closed roads around the scene of last night's helicopter crash at Gillingham near Beccles.