The BBC understands he is Mohammed Emwazi, a Kuwaiti-born British man believed to be from West London, who was known to UK security services.
BBC-da ayaa ogaatay in Ninkaas uu yahay Mohamed Emwazi oo ah muwaadin Kuwaiti haysta dhalashada ingiriiska, kaasoo loo maleynayo inuu deganaa Galbeedka London oo ay in badan insha ku hayeen laamaha amniga Ingiriiska.