A woman has died following a crash on the A47 at Dereham, Norfolk this morning.
Emergency services were called to the two vehicle collision on the eastbound carriageway at 10.30am.
The passenger in one of the cars died at the scene, whilst the driver was seriously hurt although her injuries are not considered life-threatening.
The male driver of the second car has been taken to hospital and is critically injured.
The road is currently closed in both directions with diversions in place.
Police want to speak to anyone who saw the crash and are keen to trace the occupants of a small black car which was seen driving erratically on the Norwich-bound carriageway at the time and failed to stop at the scene.