Jihadi John smoked cannabis and dressed like a gangster rapper at school . ISIS executioner has been unmasked as Londoner Mohammed Emwazi . He had an obsessive crush on classmate Ahlam Ajjot , 27 , and 'stalked her ' She has spoken of horror that world 's most wanted terrorist lusted after her . The Islamic State group claimed responsibility for the attack in which British jihadi Mohammad Emwazi, 22, blew himself up outside his home in east London last week. Emwazi was tracked down after using his student number on a laptop . He downloaded free software using details from University of Westminster .
Jihadi John smoked cannabis and dressed like a gangster rapper at school . ISIS executioner has been unmasked as Londoner Mohammed Emwazi . He had an obsessive crush on classmate Ahlam Ajjot , 27 , and 'stalked her ' She has spoken of horror that world 's most wanted terrorist lusted after her . He was part of a gang and was violent towards boys at London school . Emwazi was tracked down after using his student number on a laptop . He downloaded free software using details from University of Westminster .