Officers were called to a property in Hemming Way, Norwich shortly after 5pm following reports of a stabbing, Norfolk Constabulary said. A man in his 20s was found at the property with stab wounds. Fifteen minutes later, the ambulance service reported three men had been found nearby, on Marriott's Way, with stab wounds.

       The victims were taken to the Norfolk and Norwich University Hospital to receive treatment.

       Two of the men remain in critical condition, while the other two men have serious but non-life-threatening injuries.

       A number of cordons have been put in place in connection with the incident but officers do not currently believe there is a wider threat to the public and are treating the stabbings as an isolated incident.

       Anyone witnesses to the incident should contact Norwich CID on 101 quoting incident 338 and October 27.

       Inquiries are ongoing.

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