The case against the 17-year-old marks the first time a juvenile has been charged in federal court for alleged crimes carried out as part of online nihilistic groups connected to the 764 network, according to the FBI's Boston office. ↧ Maine teen tied to violent 764 group is sentenced to prison for chi... The case marks the first time a juvenile has been federally charged for a role in the extremist network, whose members coerce minors into escalating sexual and violent conduct.