The police watchdog has been asked to look into the death of a pedestrian, following a collision with an unmarked Cheshire Police car.
It happened on Warrington Road in Penketh around 7.20pm last night (3 February).
A man died at the scene.
Enquiries are ongoing at this time.
Cheshire Police says in line with normal procedure the incident has been referred to the Independent Office for Police Conduct.
Anyone with any information is urged to contact Cheshire Police on 101 quoting incident number 628165 or via https://www.cheshire.police.uk/ro/report/rti/rti-b/report-a-road-traffic-incident/.