Ruthless bike thief casually stabs 15-year-old boy to DEATH

Alan Cartwright was cycling slightly ahead of three friends when masked attackers stepped off the pavement and attack them. One of the heartless attackers stabs Alan in the chest without hesitation while two others smash his friends off their bikes. Alan, of Islington, north London, managed to cycle a short distance away before collapsing to the ground and dying. Scotland Yard yesterday (Tues) released the footage in an appeal to the public to help find the attackers after a post-mortem determined the teen died of a single stab wound to the chest. The calmness in which the killer strolls off the pavement and plunges a knife into Alan's heart has shocked the community after the attack at around 7.45pm on Friday last week in Caledonian Road, Islington.