In a historic verdict, former U.S.-backed Guatemalan dictator Efraín Ríos Montt has been sentenced to 80 years in prison after being found guilty of genocide and crimes against humanity. Ríos Montt was convicted of overseeing the slaughter of more than 1,700 people in Guatemala’s Ixil region after seizing power in 1982. The ruling marks the first time a former head of state had been found guilty of genocide in his own country. The judge in the case has instructed prosecutors to launch an immediate investigation of “all others” connected to the crimes. Guatemalan President Otto Pérez Molina was among those implicated during the trial’s testimony after having served as a regional commander under Ríos Montt’s regime.