Northamptonshire Police say the incident started at a party inside an address on Beaufort Drive, Duston on Friday October 28 between 9.30pm and 10.10pm after an argument involving the boy and a man wearing a balaclava. According to officers, the boy ran from the address pursued by the attacker, who then attacked him in Oakleigh Drive, Duston, stabbing him with a knife. The incident happened in Oakleigh Drive, Duston on Friday night (October 28) The suspect is described by police as a black man wearing a dark balaclava, black jacket, black pants and a white t-shirt. He was about 5ft 7in, of slim build and about 18 years old. Officers said the victim does not have life-threatening or life-changing injuries. Witnesses or anyone with information should contact Northamptonshire Police on 101 quoting incident number: 22000630772.