The victim was rushed to hospital in Coventry, where he had emergency surgery. He was said to be in a stable condition. Northamptonshire Police is now appealing for people to come forward with smart doorbell and dash-cam footage. Senior investigating officer Det Ch Insp Liz Basham said the force was making "good progress", but needed witnesses to help it "build the clearest picture of what happened". "We have identified a grey/silver Volkswagen Golf as being in the area around the time of the assault and are asking anyone who was driving in the Kingsthorpe area that night to check their dash-cam as they may have captured something which can assist our investigation," she added.