How did London Bridge killer Khuram Butt slip through the net despite being probed by cops and MI5 and filmed unfurling an ISIS flag? - Mirror Online: The terrorist in the Arsenal shirt who carried out the London Bridge atrocity was under police investigation at the time of the attack.
Police today named two of the three attackers as Khuram Butt, 27, and Rachid Redouane , 30.
It emerged that Butt, a former security site guard, was known to the police and MI5 who opened an investigation into him in 2015.
A few months later, detectives received a call from a concerned member of the public on their anti-terrorism hotline with information about his extremism.
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