Denver using case of 3 Denver teens as chance to study ISIS recruiting methods , officials say . The FBI is homing in on specific online recruiters , including some believed to be in Turkey , and others in Syria and Iraq . The girls skipped school and planned to fly to Turkey to join ISIS , authorities say . U.S. spy chief says WhatsApp uses such platforms as WhatsApp and ISIS .
Denver using case of 3 Denver teens as chance to study ISIS recruiting methods , officials say . The girls skipped school and planned to fly to Turkey to join ISIS , authorities say . U.S. spy chief says WhatsApp uses such platforms as WhatsApp and ISIS .