The Police Complaints Authority is to supervise the investigation into a fatal road traffic incident in Nottingham.
A Nottinghamshire Police officer, responding to an emergency call, struck a man believed to be in his 60s at around 1100 BST on Thursday.
The man was crossing Vernon Road in Basford when the incident happened.
He was taken to hospital but died of his injuries soon afterwards.
The incident was voluntarily referred by Nottinghamshire Police to the Police
Complaints Authority, who will supervise the investigation.
PCA member Mrs Mehmuda Mian Pritchard, who is supervising the investigation, said: "This is a very sad matter and I will ensure that a thorough and impartial
investigation is carried out on behalf of the coroner."