Detectives are appealing for witnesses following an attempted armed robbery at a shop in the Altcar Park area of Derry on Sunday, February 22.
It was reported that, at around 4.30pm, an unknown male carrying a metal bar entered the shop and demanded that a member of staff open the cash register.
When the staff member refused, the male left empty handed. It is believed that two other accomplices waited outside the shop during the incident.
A 16 year old male was arrested a short time later and is currently in custody assisting police with their enquiries.
Detective Inspector David McQuade is appealing for anyone who witnessed the incident or anyone with any information to contact CID at Strand Road Police Station on the non-emergency number 101.
Information can also be passed anonymously via the independent charity Crimestoppers on 0800 555 111.