Three people have been taken to hospital after emergency services were called to a two car collision on the A47 near Swaffham on Thursday.
The accident took place at Narborough near to the Pentney Lane junction.
Norfolk Police received a call around 7.20am to attend the incident which happened in the Swaffham bound carriageway, which is blocked.
A spokeswoman for Norfolk Police said one lane remains open and the vehicles involved were a VW and a Peugeot.
Recovery has been called and highways have also been contacted regarding a diesel spill.
A spokesman for the East of England Ambulance Service said three people have been taken to the Queen Elizabeth Hospital in King's Lynn for further assessment and treatment.
The ambulance service were called at 7.30am with three ambulances arriving at the scene.
Traffic was queuing for two miles and is taking its time to pass according to AA Roadwatch.
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