October 8, 2015 / 2:47 PM / 2 years ago

FBI says it disrupted activities of dozens of potential IS recruits

WASHINGTON (Reuters) - FBI counterterrorism agents followed dozens of potential militants around the United States full time over the summer and disrupted activities pursued by many of them, FBI Director James Comey told a congressional committee on Thursday.

FBI Director James Comey testifies during a Senate Judiciary Committee hearing on "Going Dark: Encryption, Technology, and the Balance Between Public Safety and Privacy" in Washington July 8, 2015. REUTERS/Kevin Lamarque

Comey also told the Senate Committee on Homeland Security and Governmental Affairs that U.S. investigators knew of many U.S.-based Islamic militant suspects who used encrypted communications.

Nick Rasmussen, director of the National Counterterrorism Center, also speaking to the panel, estimated that about 250 Americans had traveled to fight or train in parts of Iraq and Syria where Islamic State militants have declared a caliphate.

But he noted this was relatively small given the total of about 5,000 westerners who U.S. and allied governments believed have joined the fight in the last three years.

Rasmussen said the United States and its allies estimate that as many as 28,000 foreigners have gone to the region since 2012. A large majority of them came from countries in the region.

He acknowledged that intelligence about the conflict zone was inadequate and said U.S. and allied intelligence officials were not satisfied they had control over the flow of foreign fighters.

European security sources say around 700 British citizens or residents have traveled to Syria. Of those, around 350 have returned to Britain, and 60 or more have been killed.

Security sources say that to follow someone without being detected government agencies needed crews of up to 36 watchers for a 24-hour shift. This stretches resources even in European countries with strong counter-terrorism agencies.

Comey said the age of Islamic State recruits from the United States was becoming younger, and more women under 18 were seeking to join the group.

He said Islamic State militants had become expert at attracting potential recruits through social media pitches, and had mastered how to coax promising recruits into using private communications channels.

“When they find a live one, they will move them off Twitter, and move them to an end-to-end encrypted messaging app,” Comey said. He said without a court order, the FBI could not read such encrypted message traffic.

Rasmussen said Islamic State had overtaken al Qaeda as leader of the global violent extremist movement and had access to a large pool of potential recruits in the West.

He said al Qaeda’s Yemen-based affiliate was still seen as a big threat due to its interest in attacking the United States and planes.

Reporting by Mark Hosenball; Writing by Will Dunham; Editing by David Gregorio and Lisa Shumaker

Our Standards:The Thomson Reuters Trust Principles.
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