A man has been taken to hospital with serious injuries after police cordoned off part of St Stephens Street in Norwich.
Police were called to the scene, near to the Iceland food store, shortly after 9.30am on Friday following concerns for a man's welfare.
The East of England Ambulance Service was also in attendance after reports a man who had fallen from height.
An ambulance crew was on scene in three minutes followed by a rapid response vehicle and Norfolk Accident Rescue Service.
They treated a man, believed to be in his 40s, who had suffered serious leg injuries. He was taken to the Norfolk and Norwich University Hospital for further care in a life-threatening condition.
The St Stephens Street pedestrian underpass was cordoned off while emergency services dealt with the incident and was reopened at 11.22am.
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