A schoolboy was robbed of his iPhone by a knife-wielding, bandana-wearing thief in Fairford Avenue.
The boy, 14, was walking close to the junction of Bradgers Hill at about 12.30pm on Tuesday when he walked passed two men stood behind a car.
One of them, who was wearing a red bandana across his face, started to follow him.
A few moments later the offender approached the youngster, pulled a knife from his trousers and demanded that he handed over his phone and passcode.
Fearing for his safety, the victim did as he was told and the offenders fled the area.
The offender who was armed with the knife is described as being an Asian man, 17 to 20 years old. The second offender was also an Asian man.
If you have information relating to this incident, contact Det Con Brecknock, in confidence, on 01582 394499, the non-emergency number 101, or text information to 07786 200011.
Alternatively contact independent charity Crimestoppers, anonymously, on 0800 555 111, or online at crimestoppers-uk.org.