Objects, possibly small stones, have been catapulted towards a busy Kettering street.
Police have appealed for witnesses to the incident after a man was hit in the leg by an object in Rockingham Road.
The incident happened between 9.30pm and 10.30pm on Monday, September 1.
Police received reports of somebody catapulting the objects from a property near the junction of William Street on Rockingham Road.
A car was also hit by one of the objects.
Witnesses, or anyone with information, are asked to call Northamptonshire Police on 101. Alternatively, they can call Crimestoppers on 0800 555111.