A man is in hospital with a punctured lung after he was stabbed when he walked home from a shop.
The 40-year-old had visited the Co-Op in Newnham Road at around 9pm and was walking home along Drayton Walk when a car pulled up alongside him.
After a brief discussion a number of men got out of the vehicle and stabbed the victim before getting back into the car and making off.
The victim made his way home and the emergency services were called.
He was taken to Northampton General Hospital where he remains in a serious condition with a punctured lung.
Detective Sergeant Andy Rogers from Northampton CID, said: “We believe this was an isolated incident and are appealing for anyone who may have witnessed it or who may have any information regarding it to come forward.
“The victim had visited the Co-Op in Newnham Road and was walking along Drayton walk with his dog, a Rottweiler, when the incident happened.
“We would like to speak to anyone who may have seen the victim leaving the shop with his dog, setting off in the direction of Drayton Walk. We would also like to speak to anyone who may have seen a car stop in Drayton Walk shortly after 9pm last night.
“I would also like to speak to anyone who may have seen the victim walking along Drayton Walk after the incident.”
Witnesses or anyone with any information regarding this incident is asked to call police on 101 or Crimestoppers anonymously on 0800 555 111.