A man had a knife held to his throat while his attackers robbed him in Wellingborough.
The incident happened on Sunday, March 31, between 2.45am and 3.20am, in Jackson's Lane.
The victim was walking along the road and was attacked from behind by two other men.
One of them held a knife to his throat while the other went through his pockets stealing items. They both then made off.
Witnesses or anyone with information should call Northamptonshire Police on 101 or Crimestoppers anonymously on 0800 555111.