Road blocked around Houghton after collision.
Cambridgeshire police have confirmed the incident happend at about 1.30pm today (November 11) at Houghton Hill.
Police and ambulance crews are at the scene and the road has is blocked so drivers should avoid the area where possible.
Details of injuries are unclear at this stage.
The area is between St Ives and Houghton and according to an eye witness, a helicopter has landed at the scene.
The Hunts Post is making inquiries and will update the website once we have confirmation and more information.