FBI DIRECTOR JAMES COMEY SAYS HE KNOWS WHO THE AMERICANS FIGHTING WITH ISIS ARE, AND WILL TRACK THEM IF THEY RETURN TO THE U.S. - "60 MINUTES" SUNDAY

Comey Talks About Terror and the Threat of Cybercrime, In His First Major Television Interview Since Becoming FBI Director

FBI Director James Comey says he will keep a close eye on any Americans who have fought for ISIS and then return to the U.S. He also talks about the ominous threat of cybercrime, in his first major television interview since he became the FBI's top official a year ago. The interview, conducted by Scott Pelley, will be broadcast on 60 MINUTES, Sunday, Oct. 5 (7:30-8:30 PM, ET/7:00-8:00 PM, PT) on the CBS Television Network.

Comey says he is aware of about "a dozen or so" Americans who have joined ISIS, but can't discount whether there may be more. Of the ones he knows, he says he will do everything in his power to monitor them should they return to the U.S.

"Ultimately, an American citizen, unless their passport is revoked, is entitled to come back," he tells Pelley. "So someone who has fought with ISIL, with an American passport, wants to come back, we will track them very carefully." Watch the excerpt.

Also in the interview Sunday, Comey identifies cybercrime as the looming threat most Americans are not wary enough about. He says one of his top priorities for the Bureau is to improve its capability against such cybercrimes as identity theft and industrial espionage.