A driver was punched in the face while his car was at a junction in Kettering.
The victim was assaulted in Maple Road, Kettering, just before 3pm on Saturday, November 7.
The victim was driving down Maple Road and stopped at the junction with Laburnum Crescent.
A dark-coloured van, believed to be a Mercedes and with a foreign registration plate, was travelling in the other direction.
The van stopped and a man got out of the passenger side, went up to the victim’s car and punched the driver in the face.
The offender, a white man, got back into the van, which then drove away and turned into Stamford Road.
Witnesses or anyone with information about the incident is asked to call Northamptonshire Police on 101 or Crimestoppers anonymously on 0800 555111