A motorcyclist has suffered life threatening injuries after a collision on the A140 at Long Stratton.
It happened on Saturday at about 10.50am outside Lodge Farm, south of Long Stratton, when a black Ford Fiesta and a white Toyota Hilux pick-up truck, both travelling towards Norwich, were involved in a collision.
It resulted in the Hilux crossing into the opposite carriageway, where it was then in collision with a black Honda motorcycle travelling towards Ipswich.
Officers are keen to speak with anyone who may have stopped at the scene to help, but left before police arrived.
Police also want to hear from anyone with information concerning the driving manner of either vehicle prior to the collision.
Contact PC Richard Syrett at Wymondham Roads Policing on 101.