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MICHAEL LEITER
The investigation into London’s Saturday attack is moving quickly with police arresting at least a dozen people in connection to the incident. It came less than two weeks after a suicide bombing in Manchester left 22 people dead. The Cipher Brief’s Leone Lakhani asked Michael Leiter, former Director of the National Counterterrorism Center, about the steps counter-terror investigators are now likely to take.
The Cipher Brief: What types of steps would UK investigators be taking now?
Michael Leiter: This part of the playbook is — regrettably — very well developed. It starts with the perpetrators and the crime scenes. Who were they? Who are their contacts? Examining their phones, online history, travel records, family members, and the like. From there, officials will examine increasingly large concentric circles to understand all of the aspects of their contacts. In addition, thanks to London’s extensive CCTV, officials will be able to track their movements with some specificity.
Separately, British Prime Minister Theresa May will almost certainly now push on two fronts: disrupting online extremist activity; but, I believe, also look at how they can better address the overwhelming volume of threats being faced by the security services.
This may well lead to another push to lengthen pre-charge detention of terrorist suspects. Today, the UK has 28 days – with judicial review – to hold suspects pre-charging, but the Home Office (under May) has previously argued for 40 days, and I expect this will return.