The Federal Bureau of Investigation (FBI) is concerned about the possibility of an organized attack in the United States similar to the one that killed scores of people at a Russian concert hall last month, the bureau's director plans to tell a House of Representatives panel on Thursday.
"Looking back over my career in law enforcement, I'd be hard-pressed to think of a time where so many threats to our public safety and national security were so elevated all at once," Christopher Wray is set to tell lawmakers at budget hearing on Thursday. "But that is the case as I sit here today.
The March 22 attack on a concert hall in a Moscow suburb killed at least 144 people, the deadliest in Russia in 20 years. A branch of the Islamic State militant group claimed responsibility, but Russian President Vladimir Putin, without citing evidence, has sought to blame Ukraine.
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