article_snippet: Emwazi was a senior figure in the extremist organisation responsible for murdering foreign captives, according to Saleh Saleh .
article_snippet: Emwazi had been pinpointed as a potential terrorist by the British authorities, but was nonetheless able to travel to Syria in 2013 and join a group responsible for the murder of several Western hostages.
article_snippet: In e-mail exchanges with a journalist, the University of Westminster computer programming graduate said the University of Westminster computer programming graduate considered suicide after coming face to face with what the University of Westminster computer programming graduate suspected to be a British spy as the University of Westminster computer programming graduate attempted to sell a laptop computer in 2010.
highlights_snippet: Mohammed Emwazi was responsible for killing foreign prisoners .
  