Two boys , aged under 16 , were forced to fight , steal and perform sex acts . They were forced to get off a bus by a teenager who pretended to have a knife . Black male watched them fight in a London park and steal from a shop . He then forced them to perform a sex act on each other in a block of flats . Police have released CCTV of black teenager wearing a dark blue hoodie .
Two boys , aged under 16 , were forced to fight , steal and perform sex acts . They were forced to get off a bus by a teenager who claimed to have a knife . Black male made them fight in a London park and steal from a shop . He then forced them to perform a sex act on each other in a block of flats . Police have released CCTV of black teenager wearing a dark Nike hoodie .