Mohammed Emwazi and brother guy were living on main street in 2008 . Former brother of younger brother says he and brother were attacked by gang . He says Emwazi then kidnapped the boys who attacked them in revenge . they were ' threatened with gun and left on bail without any clothes ' Claims follow revelations about brothers ' past links to criminals in prison .
Mohammed Emwazi and brother Omar were living on London estate in 2008 . Former friend of younger brother says he and Omar were attacked by gang . He says Emwazi then kidnapped the boys who attacked them in revenge . Attackers were 'threatened with gun and left on M1 without any clothes ' Claims follow revelations about brothers ' past links to criminals in capital .