At least two people have been taken to hospital after a crash on the westbound A47 at Thickthorn.
Police were called to the slip road on the King's Lynn bound carriageway at 3.30pm following the crash involving two silver cars.
The fire service sent crews from Carrow, Earlham and Hethersett to assist the East of England Ambulance Service as two men were trapped in the vehicles.
The men were helped out before receiving treatment. One man, in his 60s, was treated for a head injury and a man, in his 20s, also received treatment.
Both were taken to the Norfolk and Norwich University Hospital for further care.
A third ambulance was dispatched and treated another person for unknown injuries.
Police closed one lane of the road while they waited for a recovery vehicle. which caused delays in the area. The lane had re-opened by 6.15pm.
Police have appealed for witnesses to the crash to call them on 101.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here