Multiple people have been critically injured in a five-vehicle crash on the outskirts of Downham Market.
The A1122, from St John's Way to Downham Road, is fully closed to traffic in both directions following the crash.
Emergency services were called to the scene at 6.36am this morning (January 18).
One person has been taken to Addenbrooke’s Hospital in Cambridge by air ambulance.
There were reports of heavy traffic around London Road and drivers were being told by police to avoid the area and there are diversions in place.
There is a police cordon at either end of the road as police remain on scene and the road is likely to be closed for some time.
An air ambulance was seen over the bypass at around 7am this morning (January 18).
The crash comes amid a spate of crashes across the region during the past week.
Just three miles away there was another crash at 8am in Wereham and West Dereham.
READ MORE: Spate of crashes prompt road closures and delays
Drivers have been urged by police to take extra care on the roads during the cold snap which created hazardous driving conditions even on gritted roads.
The fast stretch of road remained icy this morning following a hard frost overnight amid subzero temperatures.
Inspector Simon Jones, of Norfolk and Suffolk Roads Policing Unit, said: "This series of collisions follows a weekend of tragedy on the county’s roads with six people killed in four crashes between Friday and Sunday.
"While we can’t comment on the causes of those collisions and those that have happened this morning, one thing is clear that weather conditions are exceptionally cold which leads to icy and hazardous driving conditions.
"Our plea to motorists is to please take extra care on the roads in the coming days while this weather continues.
"Low temperatures overnight mean some of our roads are extremely icy and this isn’t always visible to the driver.
"Travelling at slower speeds in these conditions will give you more time to react to unforeseen hazards."
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