Mi5 to review intelligence handling on manchester attacker

MI5 has begun an internal review over how it handled intelligence about the Manchester suicide bomber Salman Abedi amid growing criticism that it failed to deal properly with warnings that

he posed a threat. Britain's domestic security service was alerted to Abedi's extremist views on at least three occasions before last Monday's terror attack, which left 22

people dead, but decided against investigating further. A security source told Reuters that Abedi was not among the 3,000 people currently under active investigation by MI5, although he was

one of around 20,000 people "known" to the intelligence services. SUBSCRIBE TO THE WEEK Escape your echo chamber. Get the facts behind the news, plus analysis from multiple

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to your inbox. From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox. MI5 is subject to scrutiny by a committee of

parliament, but "it is highly unusual for British authorities to make public that the security service is conducting its own internal investigation into possible lapses", says the

news agency. Home Secretary Amber Rudd told BBC News the review was the "right first step" for the intelligence agency to take, but declined today say what was known about Abedi

and when. It is not yet clear whether authorities became aware of the bomber during Theresa May's tenure as Home Secretary between 2010 and 2016. Rudd was also forced to defend the use

of new anti-terror powers after The Times reported that a "key" tool which gives law enforcement the power to stop Britons suspected of involvement in terrorist activity abroad at

the UK border has only been used once it was introduced in 2015.