Lincolnshire Police are investigating claims that a customer stole alcohol and groceries from a co-op store near Lincoln.
The theft occurred at the Nettleham co-op on September 17 at around 1.45pm.
Officers have released a CCTV image of a woman they believe may be able to help with their inquiries.
She is of a slight build with brown hair and was wearing a maroon t-shirt with grey trousers.
Anyone who recognises this woman should call Lincolnshire Police on 101, quoting incident 269 of September 17.
Alternatively people can call Crimestoppers anonymously on 0800 555 111.