DETECTIVES are hunting a teenager who threatened to stab a 13-year-old boy on Monday night before stealing his bike.

Three youths approached the boy after he left his bike against railings in the playground of Sedgley Park County Primary School, Bury.

When the boy tried to stop the youths taking his bike, one of them said: "Get off the handle or I'll stab you."

The victim let go of the bike and the gang escaped down the nearby York Street.

No knife was seen during the robbery, which left the victim shaken but uninjured.