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
Another windy day in the Anglia region with a mixture of sunshine and showers
A Liberal Democrat parliamentary candidate has said he deliberately caught HIV after years battling depression.
Prince William has started his first day at Bond Air Services as he begins his training to be a pilot for the East Anglian Air Ambulance.