Do you recognise the man pictured here?
Police want to speak to him following a theft from a Morrisons store in Blackpool Road, Ashton-on-Ribble.
A woman was paying for her products at a self-service checkout at the Morrisons Local, in Blackpool Road, when she forgot to collect her £20 cash back.
A man, who was next in the queue, approached and took the money from the machine.
He is described as white, of a slim build, 50 to 55 years old, with short grey hair and grey facial hair.
Officers have now released this CCTV image in a bid to trace a man they believe can help with their investigation.
Anyone with information is asked to call Preston Police on 101 or call Crimestoppers on 0800 555 111.
Your call is anonymous, no details will be taken and you won’t go to court.