Armed police are attending the incident on Hemming Way, Norwich. (Image: Ben Hardy)
Multiple police units are currently attending an incident in the city this evening (Wednesday, October 27).
Police are at an address on Hemming Way in Norwich and have blocked off Marriott's Way, near Wensum Park.
People in the area have been urged to turn back towards the city.
At least one ambulance is also thought to be in attendance.
A police spokesperson said: "We attended following reports of people injured near the address.
"We believe a stabbing has occurred. There are three people in hospital and three people are currently detained."
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