Prosecutors have arrested the brother of deceased former President Fernando Romeo Lucas Garcia in connection with killings and disappearances during the country’s 1960-1996 civil war.
Benedicto Lucas Garcia is a former army commander credited with founding Guatemala’s paramilitary groups.
His brother ruled Guatemala with an iron fist from July 1978 until March 1982.
Prosecutors said Wednesday they also arrested retired Gen. Francisco Luis Gordillo, who helped bring former dictator Jose Efrain Rios Montt to power from 1982 to 1983.
Both face charges of crimes against humanity and disappearances of people.
Peace accords brought an end to the 36-year civil war in 1996. Government security forces have been blamed for most of the 200,000 killings during the war.