'Jihadi John' was identified as a Londoner who studying computer programming. Photo: Screenshot.

Yahoo/Reuters – The masked “Jihadi John” killer who fronted Islamic State beheading videos has been identified as Mohammed Emwazi, a British computer programming graduate from a well-to-do London family who was known to the security services.

The black-clad militant brandishing a knife and speaking with an English accent was shown in videos released by Islamic State (IS) apparently decapitating hostages including Americans, Britons and Syrians.

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