Police officers are appealing for witnesses after a 22-year-old woman was assaulted in the Asda carpark in Washbrook Road, Rushden.
The incident happened in the lower parking area on Wednesday, October 20, between 12.30pm and 1.30pm, when the woman was punched to the face, sustaining injuries which required hospital treatment.
The suspect is described as an Asian man, about 5ft 6in, wearing a long, black parka jacket, black shorts and sliders. He spoke with an Indian accent and had short dark hair and unkempt stubble.
Police officers are aware that a key witness described as a white male driving a Blue Audi was in the area at the time and strongly urge him to come forward with any information he may have about the incident.
Witnesses or anyone with information should call Northamptonshire Police on 101.