Police are appealing for witnesses after a car failed to stop following a crash on the A1075 near Dereham.
A blue Citroen Saxo spun out of control and into nearby trees after it was hit by a blue Peugeot between Shipdham and Ovington, near Watton.
The Peugeot did not stop after the collision, which happened at about 7pm on Monday.
Witnesses are asked to call PC Chris Bailey-Green at Dereham police station on 101 or Crimestoppers anonymously on 0800 555 111.
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