1: ( CNN ) Before he was Jihadi John , he was little John -- a young version of the same Mohammed Emwazi who authorities say later became the English-speaking face of ISIS terror . 2: And in late February , two U.S . officials and two U.S . congressional sources confirmed reports in British and other media that Emwazi went on to join ISIS and is the man known as Jihadi John . 3: U.S. authorities say Emwazi grew up to be the ISIS terrorist known as Jihadi John .
1: authorities 2: two U.S . officials and two U.S . congressional sources 3: U.S. authorities