A young woman was rescued by a member of the public after falling in the River Wensum in Norwich.
Witnesses have described seeing the man jump in to pull the woman to safety after she was seen walking up and down the embankment.
A witness described the moment he saw police attempting to resuscitate the woman, who had fallen in the river on Riverside Road, close to the railway station.
The witness, who wished to remain anonymous, said he was walking past when he saw two officers performing mouth to mouth and CPR.
He said: 'I was walking past and there were two policemen working on her, giving mouth to mouth and performing compressions on a young lady.
'People were saying that she had fallen in the water between the two longboats, and the big guy with a beard jumped in after her.
'I really hope that she is okay.'
One man said: 'My friend called me out after saying he saw a women running up and down the embankment.
'Next thing there was all this commotion and the emergency services turned up.'
Two ambulances, two police cars, one fire engine and a paramedic vehicle were called to the scene at 10pm this evening (Monday, September 4.)
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