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A reward of up to £10,000 is being offered by the Association of British Bookmakers - after an armed robbery at Ladbrokes in Copnor Road, Portsmouth on Wednesday, January the 4th.
It's for information leading to the arrest and conviction of the person who committed the crime.
Two members of staff were closing the shop when a man entered using a rear door, which is accessed via an alleyway from Domum Road.
The man threatened the two members of staff with a knife before taking a quantity of cash. The man then left the store using the rear door.
The two staff members, a man in his 20s and a man in his 30s, were uninjured.
The robber's described as:
· Early 20s
· 5ft 10ins to 6ft tall
· Slim build
· Wearing dark clothing
Anyone with information should contact Portsmouth CID on 101.