Days, after Charlotte-area ISIS sympathizer Justin Sullivan was sentenced to life for planning mass murder in support of the Islamic State terror group, a North Carolina-based terrorism expert, says the FBI is investigating about 1,000 ISIS-related threats in all 50 states. U.S. Attorney Jill Rose of Charlotte has confirmed that suspected ISIS sympathizers are being investigated in North Carolina while not disclosing the number, a “domestic terrorism expert” told The Charlotte

Observer that the state probes are among some 1,000 active FBI investigations. After Sullivan’s conviction this week, Keri Farley, the FBI’s assistant special agent in charge of North Carolina, was quoted as saying that while Sullivan’s arrest saved lives, “homegrown violent extremists” are becoming more difficult to deal with. “Identifying a terrorist before an attack happens is one of the most difficult challenges we face,” she said at a press conference.  READ MORE