ARMED cops swooped on a sleepy town after a man was stabbed to death and three others injured in a knife brawl.
A murder probe has been launched after the violence erupted in Thorpe St Andrew near Norwich, Norfolk, last night.
One man was declared dead at the scene, while three others were taken to hospital with knife wounds.
Norfolk Police confirmed two people have been arrested in connection with the horror and will be quizzed by cops.
They said they were called to the "disturbance involving a large number of people" at around 7.35pm.
Around eight police cars, ambulances, rapid response vehicles and the air ambulance were scrambled.
The scene has now been cordoned off while police conduct their enquiries.
Superintendent Tracey Little said: "A murder investigation has been launched and we are in the early stages of our enquiries to establish the circumstances surrounding the incident.
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"We would like to hear from anyone who may have witnessed the incident or has information concerning it."
Thorpe St Andrew is a small town with around 13,000 residents and sits beside the River Yare on the edge of the Norfolk Broads.
Anyone with information is asked to contact Norfolk Police on 101.