A man was pushed and then punched in the face by an offender who demanded he hand over his car keys in the early hours of the morning.
The victim was walking along Rodney Drive in Corby to get to his car when he was approached by the offender who demanded his car keys.
When the victim refused, the offender assaulted him in an attempt to take the keys.
The victim fought back, forcing the offender to flee towards Kingsthorpe Avenue.
The offender is described as white, in his mid-20s and wore dark clothing.
The incident happened at about 4.30am on Friday, March 4.
Anyone with information about the incident can call Northamptonshire police on 101 or call Crimestoppers anonymously on 0800 555111.