The emergency services were called to reports of a car on fire on the A47 at Brundall this evening.
Police and firefighters went to the scene but a fire service spokesman said the fire was a false alarm that had been caused by a mechanical fault on the vehicle.
A police spokesman said the incident had caused delays on the road but that the road was clear by about 8.30pm.
Two fire crews, from Hethersett and Earlham, attended.
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