Detective Sergeant Robinson said: “We received a report around 3:50pm that a male had entered commercial premises in the Beechvalley area armed with a knife.
“He demanded staff take money from the till and place it in a bag he had with him.
“The suspect then fled on foot with a sum of money.
“Thankfully, no injuries were reported, however, there’s no doubt this was a terrifying ordeal for staff members who were in their place of work simply doing their job.
“The suspect is described as having worn a navy-coloured hooded top with the hood pulled tight around his face and a white baseball-type cap underneath; black trainers and black tracksuit bottoms with three white stripes down the side.
“He’s also reported as wearing a grey-fleece type jacket.
“I want to appeal to anyone who was in the area and saw a male matching the description of the suspect, or anyone who saw what happened, to get in touch with detectives on the non-emergency number 101, quoting reference number 1291 of 21/08/19.”