article_snippet.sent: It is thought that during the early stages of the conflict Emwazi was a prison guard, along with three other Britons, leading to three other Britons being nicknamed The Beatles.
article_snippet.sent: Escaped captives had given Emwazi the name John, after Beatles lyricist John Lennon, which eventually became Jihadi John.
article_snippet.sent: Emwazi first rose to international attention in August 2014 when Emwazi appeared in a video showing the beheading of American journalist James Foley.
article_snippet.sent: Since then Emwazi has been seen in videos showing the beheading of American journalist James Foley.
article_snippet.sent: Also murdered at the hands of Emwazi were David Haines and Alan Henning, two British aid workers, and Japanese hostages Kenji Goto and Haruna Yakuwa.