A man was stabbed in the stomach and face during an attack on the Beanfield estate in Corby.
The incident happened at about 9pm on Saturday, August 30.
A police spokeman said: “An altercation took place between the victim and another man, either in the victim’s garden or the alleyway behind his house.
“The offender stabbed him in the stomach and face and then ran off in the direction of Sharman Drive.”
The man who was stabbed is still in hospital receiving treatment for his injuries.
Anyone who knows anything about the incident is asked to call the police on 101 or Crimestoppers anonymously on 0800 555111.