A woman has been arrested after staff members were threatened with a knife in two separate robberies. In the first incident on June 24, at around 8.40pm, a robbery-in-progress at a shop on Heron Way in the Waterside in Derry was reported to police. It’s alleged the female suspect threatened a staff member with a knife, taking cash and other items from the shop. A PSNI statement said: “Police responded and located a woman matching the description of the suspect, who was arrested. “While dealing with this incident, police received a report of a robbery at nearby commercial premises, which had occurred a short time earlier on Rossdowney Road. It was reported a female had entered the store and threatened a staff member with a knife, making off with cash. “The woman arrested, aged 37 years old, was arrested on suspicion of offences, including robbery, and she remains in custody at this time. Enquiries are ongoing.” For all the latest news, visit the Belfast Live homepage here and sign up to our politics newsletter here.