The FBI is reviewing thousands of terrorism-related tips and leads from the past three years to make sure they were properly investigated and no obvious red flags were missed, the Associated Press reports. The review comes after attacks by people who were once on the FBI’s radar but who have been accused of massacring innocents in an Orlando, nightclub, injuring people on New York City streets and gunning down travelers in a Florida airport. In each case, the suspects had been determined not to warrant continued law enforcement scrutiny. A senior federal law enforcement official described the review as an effort to “err on the side of caution.”
The audit reflects the challenge the FBI faces in predicting which of the tens of thousands of tips the bureau receives annually might materialize one day into a viable threat. Though there’s no indication of significant flaws in how terrorism inquiries are opened and closed, the review is a way for the FBI to “refine and adapt to the threat, and part of that is always making sure you cover your bases,” said the law enforcement official.