A car windscreen was damaged after a group of children threw an object off a bridge on the A508 near Brixworth.
A white Nissan Micra was being driven under the bridge between Brixworth Country Park and the main road to Brixworth at 5.45pm on Saturday, August 9 when an object was thrown towards his car.
The victim believes that objects were being thrown by a group of children who were running over the bridge, and that one of them was wearing a red top.
Witnesses, or anyone with information, are asked to call Northamptonshire Police on 101. Alternatively, they can call Crimestoppers on 0800 555111.