All emergency services including the air ambulance are at the scene of a very serious crash in the Fens between Peterborough and Wisbech this morning.
Police, ambulance, fire and the air ambulance were called at 7.10am to Black Drove, Murrow.
Details are still unclear, but a police spokesman described the incident as very serious and said the road is likely to remain closed for sometime.
The spokesman said it is unclear, but two or three vehicles are thought to have been involved.
Motorists are asked to avoid the area.
The road is closed between Long Drove and Cant's Drove.