Dashcam footage has been released of two bikers who failed to stop for the police in Rotherham.
Police Community Support Officers spotted a motorbike being ridden dangerously on First Avenue, East Dene, and attempted to get the rider and passenger to stop.
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But they rode off and have not yet been tracked down.
They were captured on camera at around 2.45pm on Wednesday, January 2.
The motorcycle was fitted with a false registration plate.
Anyone with information should call South Yorkshire Police on 101 and ask for the Rotherham Central Neighbourhood Policing Team.