ISIS 'Devil' Buzzing with 'Kill, Kill, Kill' Messages

Director of the FBI James Comey said the agency stopped several potential acts of terrorism before the July 4th weekend.

Federal agents arrested more than 10 people in the month before the holiday, some of whom were planning acts of violence around that weekend. 

Comey is warning that ISIS is trying to recruit members over the Internet and then sending messages telling new recruits to kill people.

Comey says ISIS has about 21,000 English-language followers on Twitter in Syria. He said ISIS is trying recruit new members and once they respond, the terrorist group sends them encrypted messages.

The FBI is trying to get help breaking that encryption technology from Silicon valley.

The Islamic radicals encourage the potential recruits to come join their caliphate. But if they can't do that, ISIS has another message for them.

"If you can't come, kill somebody where you are. Kill somebody in uniform, kill anybody," Comey said the messages urge. "If you cut their head off, great, videotape it. Do it, do it, do it."

"They're pushing this through Twitter," he explained. "So it's no longer that someone's who troubled needs to go find this propaganda and this motivation. It buzzes in their pocket. So there is a device, almost a devil on their shoulder all day long saying, 'kill, kill, kill, kill.'"