Security camera pictures of four women released after Northampton supermarket assault
The incident happened between 4pm and 4.20pm on Monday, October 3 2016, at the Costcutter in Lings Local Centre in Billing Brook Road.
A man was left with an eye injury requiring stitches.
Officers are keen to locate the women pictured, who may be able to assist the investigation and are urging them to make contact, a police spokeswoman said.
Anyone with any information relating to their whereabouts can contact Northamptonshire Police on 101. Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111.