Officers investigating a robbery at bookmakers in Ashton in Makerfield have released CCTV of the incident.
Shortly before 9.10pm on Tuesday, May 31, police were called to a report of a robbery at Labrokes in Gerard Street.
A man, who was wearing a black mask, brandished a knife and demanded money from a cashier before making off with a quantity of cash.
He ran down the main road and then went down a small alleyway at the side of Fabulous Feet Chiropodists which leads to Heath Road.
The offender is described as white, about 6ft, with brown eyes, in his mid-20s, with a local accent and was wearing dark bottoms, a black hooded top, black fleece gloves and was carrying a white drawstring bag with black writing on it.
Detective Constable Cameron Hackett, from GMP’s Wigan borough, said: “Anyone who recognises the man pictured is urged to call police.
“This would have been an extremely frightening ordeal for the cashier and we are following a number of enquiries to find the culprit.”
Anyone with any information about the robbery is urged to call 101 quoting incident number 2464 of 31 May 2016.
Alternatively, information can be passed on to Crimestoppers anonymously on 0800 555 111.