'They Brainwashed Him': Attack In Belgrade Highlights Online Radicalization

When 25-year-old Milos Zujovic carried out a brazen attack on the Israeli Embassy in Belgrade, his father said he had suspected his son would turn to violence. The young man, who was killed after wounding a guard with a crossbow, had converted to Islam and pledged his allegiance to the Islamic State group. Security experts in Serbia say they've seen growing numbers of individuals who adopt extremist ideologies from contacts made online.