A broken down tractor is causing disruption on the A47 at Harford Bridge, near Norwich.
Police and firefighters were called to the scene of the incident in the westbound carriageway shortly before 10.30am.
Police are currently advising drivers to 'approach with caution and use an alternative route if possible.'
Three fire crews, from Carrow, Earlham and Sprowston, were sent to the scene and helped to contain a fuel leak on the tractor.
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