A man has been arrested on suspicion of impersonating a police officer and falsely detaining a member of the public.
The incident happened at a service station in Tewkesbury Road, Coombe Hill at about 9pm last night, Monday 9 March, where the man is alleged to have activated blue lights on his car and pulled over another driver.
He is reported to have shown a false warrant card and told the driver to stay where he was until back up arrived.
After some time the detained man became suspicious and called 999.
Officer arrived and arrested a 48-year-old man from Norton. He is currently in police custody.
Anyone who saw the incident, or saw a blue VW Tiguan in the area is asked to call Gloucestershire Constabulary on 101 quoting incident 355 of 9 March.