A 13-year-old boy suffered a badly broken leg after a car collided with him and a friend in Bridge Place last night.
The teenagers were knocked off their bikes and taken to Bassetlaw Hospital following the incident.
His 14-year-old friend was treated for minor injuries in the crash which occurred around 7.40pm.
Police are currently hunting the driver of a silver saloon car that drove into the Priory Centre car park after failing to stop.
They want to speak to anyone who witnessed this collision, or who saw a vehicle matching this description in Bridge Place or in Worksop town centre between 7.30pm and 7.50pm on Tuesday 15th March.
Anyone with any information can contact Notts Police on 0300 300 9999 or Crimestoppers anonymously on 0800 555111.