A road that runs between Earith and Haddenham has been closed following a fatal collision.
Cambridgeshire police, the East of England Ambulance Service, and Cambridgeshire Fire and Rescue Service crews were called to the A1123 at about 7.50am after reports of serious collision.
The air ambulance was also called to the scene.
Police have since confirmed that a man has died as a result of the incident.
A spokesman for Cambridgeshire police said: "Anyone who witnessed the collision is asked to contact the road policing unit on 101 quoting incident 91 of today (December 1)."
The road was closed while emergency services worked at the scene but re-opened again to traffic at about 4pm.