The man entered the shop at the junction of Pill Street and Little Dock Street and threatened the member of staff, demanding money. After making several demands for this, all of which were refused, he left the shop as another customer entered.
The suspect is described as a white man in his early 20s who spoke with a local accent. He was wearing a dark coloured, waist length, hooded coat and mustard coloured chinos.
Police have issued CCTV images of the suspect taken at Cogan and at Barry Dock Railway Stations.
Detective Sergeant Dave Thomas at Barry CID said:
“We want to hear from anyone who can identify this person or who may have seen him travelling by train between Penarth and Barry on 24th January.”
Police are appealing for anyone who may recognise the suspect for the description or who may have seen him outside the shop beforehand or in the area after the offence to contact them.
Please contact Detective Sergeant Dave Thomas at Barry CID on 01446 731606 or 101 or Crime stoppers on 0800 555111, quoting reference 62130023200.