Two schoolboys were forced to fight and perform sex acts on each other by a teenager , pictured is a black male wanted in connection with the incident . Two schoolboys were forced to shoplift , fight and perform sex acts on each other by a teenager who made them get off a bus by claiming to have a knife , police said . The two boys , aged under 16 , were approached by an unidentified male teenager on the top deck of a bus departing from Brixton , London , just before 8pm yesterday . He forced the pair off the route 133 bus in Elephant and Castle after claiming he had a knife and led them to a park in Newington Butts , where he made them steal from a nearby shop and fight each other . The pair where then taken to the stairwell of a block of flats in Walworth , where police said he forced one of the boys to perform a sex act on another before walking away in an unknown direction . Scotland Yard has released a CCTV image of a black teenager wanted in connection with the incident . He was seen wearing a dark blue or black Nike hoodie . Trainee Detective Constable Amy Beautridge said : 'This was a most unusual crime and distressing crime , during which the two young victims were terrified by threats made by the suspect , who intimated he was in possession of a knife . 'He used their fear to control them and force them to effectively do as he said . ' She added : 'Despite their young age , the victims have been incredibly brave in coming forward and providing information to the police and I would praise them for this . ' ' I am very keen to identify and speak to the person in the CCTV image we have released today , and I would urge anyone who recognises him to call the police or Crimestoppers as soon as possible . ' I would also like to reassure anyone concerned about contacting the police that they will be treated with the utmost sensitivity . ' Anyone with information is asked to contact police on 020 8721 4621 , or contact Crimestoppers anonymously on 0800 555 111 or at www.crimestoppers-uk.org . The boys , aged under 16 , were approached by an unidentified male teenager on the top deck of a route 133 bus departing from Brixton ( pictured ) , London , just before 8pm yesterday . The boys were led to a park in Newington Butts , where they were made to steal from a nearby shop and fight each other .
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 .