It happened in Dorset Avenue last night when the victim was walking along the pavement with a friend.
They were both hit by a dark-coloured car.
One of the men was then stabbed in his lower body and is in a serious condition in hospital.
More top news
A campaign has been launched to increase tourism revenue in Northamptonshire by 50% - masterminded by a former Saatchi & Saatchi director.
A change in wind direction brings warmer temperatures to the Anglia region
The RSPCA is investigating after two thin dogs were found abandoned, in a neglected state, on an isolated road in Hertfordshire.