London Attackers Slipped By Despite an Avalanche of Warnings
Usama Hasan, a former Islamic extremist who now works with the police to help de-radicalize others, said he had
a physical altercation in a London park less than a year ago with one of the assailants, Khuram Shazad Butt.
Butt alongside other Muhajiroun members sparring with the police, who were called to a London park where the
men had unfurled an Islamic State flag, said Ishtiaq Ahmed, whose brother worked at the same restaurant.
Jesse Morton, a former Al Qaeda recruiter who became an informer, knew the London attacker Khuram Shazad Butt and flagged him to the F.B.I.
Meanwhile, in Italy, the authorities allowed the second attacker, Youssef Zaghba, to walk past them
last year at an airport security check, even though he was carrying Islamic State propaganda.
" he wrote. that Could you please confirm that my assailant in the above case (CAD 7943 06JUL16)
is the same Khuram Butt who was one of the London Bridge terrorists over the weekend?
Butt, the most detailed account was offered in an interview on Tuesday with Mr. Hasan, the member of the network of former extremists
and the head of Islamic studies at the Quilliam foundation.
LONDON — Islamic State propaganda had been found in the bag of one attacker while he was trying to board a flight in Italy.
He was traveling on a one-way ticket, and the authorities found Islamic State material on one of his electronic devices, said two former
European intelligence officials, who spoke on the condition of anonymity because they were not authorized to discuss the matter.
