with a computer programming degree. how and why did a young man with his prospects join isis? a group for suspected radicals says it started when he went to tanzania in 20090 take a safari. he was subject to hostile questioning five times, mostly by british security services was once worked over by interrogators when he returned from kuwait. on one occasion he was roughed by the police. he was strangled by an officer. reporter: officials have no comment. analysts who know isis recruiting say this about the claim that harassment from authorities turned mohammed emwazi into jihadi john. it s an absurd claim. it was not the cause of his radicalization. the reason the intelligence services harassed him was because they suspected him of wanting to join al shabab in
there are some affluent parts, some working class parts. what we know about his family and where he grew up is that he had a good education from a middle class background. he actually had a computer programming degree from westminster university. but we do also know he was flagged by security services. he was put on a terror watch list for example, and he was put on a no fly list as well. at some point in 2012 it seems, he finally left the country and his family was visited by security services. they told him that their son was now in syria, ana. and atika, i understand that the daughter of one of these isis beheading victims, who obviously was just obviously very devastated about that news is now speaking out about this identity revelation of jihadi john. what is she saying? reporter: absolutely as you can imagine this is the daughter of david haynes.
to find this guy. eventually i m sure he will be found, but it will take a long time. and, peter before you go i want to ask you one last question about jihadi john. he has a degree in computer programming. that by the way, carol, is very routine. your discussion with atika was interesting. the profile for these guys is exactly this person. university graduate often with a sort of technical degree in computing or engineering. that s overwhelmingly the kind of profile that we ve seen in terrorist organizations. you know think about the leader of the 9/11 attacks, he had a doctorate or was studying in all things but urban preservation. this is quite typical for the leader of these organizations. it would be astonishing if he was from a different kind of background. i was intrigued by the computer programming degree because of this social media presence that isis had. that s a great point, carol.