Police are linking two armed robberies at Northampton bookmakers at the weekend.
In both, a weapon was used in a bid to get money and in the second, police have confirmed a gun was used.
The first robbery happened at Betfred in Kettering Road at about 6.30pm on Saturday.
A man entered the shop, threw a bag at the cashier and demanded money, claiming he had a weapon.
The shop assistant didn’t have any money and immediately went to the cubicle door to ensure it was locked. At this point the robber left the shop.
The second robbery happened at Ladbrokes in Fish Street at around 7pm.
A man entered the shop, threatened staff with what appeared to be a gun and demanded money.
Staff handed over a small quantity of cash and the man left.
Northamptonshire Police believe the same man committed both robberies.
He is black, 5ft 9in and wore a black facial covering, dark jacket and dark tracksuit bottoms
In the second incident, staff said he wore grey tracksuit bottoms.
Anyone with information can call police on 101.
Alternatively, information can be given anonymously to Crimestoppers on 0800 555 111.