A 15 year old girl suffered a broken kneecap when she was knocked down by a hit and run driver on a pedestrian crossing.
The girl started to cross the road with a friend when the lights had turned red when she collided with a car.
The motorist stopped further up the road but then drove off.
The crash happened in High Street, Dunsville. The car is described as small, red and with four doors.
Police only just released details about the hit and run which happened at about 7pm on Saturday, January 22 today.
Call 0114 220 2020 quoting incident number 556 of January 23.