London--Prime Minister David Cameron has defended Britain's security services after Islamic State executioner "Jihadi John" was unmasked as London graduate Mohammed Emwazi, a man previously monitored by spy agency MI5.
As more details emerged about Emwazi, named by media and experts as the man who beheaded at least five Western hostages held by the IS group in Syria and Iraq, questions were asked about whether he could have been stopped.
Civil rights group Cage, which had been in touch with the Kuwaiti-born computing graduate before he left Britain, said MI5 had been tracking Emwazi since at least 2009.
Officials have not confirmed Emwazi's identity, but Cameron said Friday: "We will do everything we can with the police, the security services, with all that we have at our disposal, to find these people and put them out of action."
He added: "All of the time they (the security services) are having to make incredibly difficult judgements and I think basically they make very good judgements on our behalf."
Olivier Guitta, managing director of security and risk consultancy GlobalStrat, warned the security forces lacked the resources to track all those who crossed their radar.
"To monitor one person you need 30 officers, so if you have in England 1,000 people that are on your list, you need 30,000 officers. We don't have that," he told AFP.
But senior lawmaker David Davis, a member of Cameron's Conservative Party, said Emwazi was known to associate with fanatics and was on a terror watchlist.
"How many more people must die before we start to look more closely at the strategy of our intelligence services?" he wrote in The Guardian newspaper on Saturday.
- 'Apology for terror' -
Further criticism came from Cage, a group which supports people impacted by the so-called war on terror, which said Emwazi had been radicalised because of "harassment" by British intelligence agents.
The group said this began following a post-graduation trip to Tanzania in 2009 when Emwazi was accused of seeking to join militants in Somalia.
Cage also alleged that MI5 tried to recruit the graduate, who it described as a "beautiful young man".
Cameron's office said it was "reprehensible" to suggest MI5 was to blame for Emwazi's actions, while London mayor Boris Johnson accused Cage of an "apology for terror".
John Sawers, the former head of Britain's MI6 foreign intelligence agency, told the BBC: "The idea that somehow being spoken to by a member of MI5 is a radicalising act, I think this is very false and very transparent."
- Baseball fan -
Emwazi had lived in Britain since the age of six and many of those who knew him expressed disbelief at his new identity.
One of his former high school teachers told the BBC that Emwazi had anger issues as a teenager but was successfully helped to control his emotions.
The unnamed woman said he "had everything going for him" and said his apparent transformation was "unbelievable".
afp
