A man was "carried" down a St Phillips road on the bonnet of a car when he identified himself as a police officer.
The plain-clothed British Transport Police officer was walking along Chapel Street when he was called over by a man in a new silver-coloured Volkswagen Passat Estate.
After he identified himself as a police officer, the man drove off, carrying him on the bonnet.
The officer fell from the car near the junction with Camwal Road and the man drove off.
He was was not badly hurt.
The incident happened between 8pm and 8.45pm on Friday, January 17.
The driver was in his late 20s or early 30s, with a rounded face and "chubby" build.
He was described as being of Asian appearance, clean shaven with dark hair.
He was smartly dressed in a white or cream-coloured shirt.
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If you saw the incident or have any dashcam or CCTV footage which could help the investigation, get in touch with officers through www.avonandsomerset.police.uk/contact or by calling 101 quoting reference 5220013464.
Alternatively ring the independent charity Crimestoppers on 0800 555 111. They never ask your name or trace your call.
