Detectives are investigating an armed robbery in the Strathfoyle area of Derry yesterday evening.
At around 6.30, a masked man in his 20s with a local accent entered a shop on Deramore Drive. He threatened a female staff member with a screwdriver, forcing her behind the counter and making her open the till.
The robber then grabbed some money from the till and ran off.
The shop assistant was left shocked but physically uninjured.
Policer say the attacker was wearing a full face mask commonly known as a "Morph Mask", and was around 6ft in height.