Five men have been arrested after four men were found with stab wounds in Norwich.
Officers were called the scene at a property in Hemming Way shortly after 5pm following reports of a stabbing, Norfolk Constabulary said.
They found a man in his 20s inside the property with knife wounds.
About 15 minutes later, a further call was received from the ambulance service reporting that three men had been found on Marriott’s Way, near to Barker Street, with stab wounds.
Two of the men are in a critical condition while the other two men have serious but non life-threatening injuries.
Five men have been arrested in connection with the incident and inquiries are ongoing, the force said.
A number of cordons have been put in place in connection with the incident and although inquiries are in their early stages, officers are treating this as an isolated incident and do not believe there is a wider threat to the public.
Anyone who witnessed anything should contact Norwich CID on 101 quoting incident 338 and October 27.