An elderly man has died after being hit by a police car in Chesterfield.
Derbyshire Police said the incident happened when a police vehicle was responding to an emergency call and collided with a pedestrian in Loundsley Green Road at 8.25am today.
A spokesperson said: "The pedestrian, an elderly gentleman, was pronounced dead at the scene.
"Derbyshire Constabulary has referred itself to the Independent Police Complaints Commission and, as a result, we are unable to give further details at this stage."
The man's next of kin are being informed.
His name has not yet been publicly released.
An IPCC spokesman added: "The IPCC has begun an independent investigation after being notified by Derbyshire Constabulary of a collision involving a police car and a pedestrian in Loundsley Green Road this morning.
"Sadly, we understand that the pedestrian, a man, was pronounced dead at the scene.
"After we were informed about the incident we deployed investigators to the scene and the police post incident procedures."
An eyewitness said: "The damage to the police car was extremely bad."