The country's national police chief, security minister and head of Guatemalan prisons all resigned after the officers -- implicated in the killings of three El Salvadoran lawmakers and their driver -- were killed while in custody.
Last month the bodies of three politicians from El Salvador in a car in Guatemala's capital, La Prensa Grafica reported Tuesday.
The body of their driver also was found with the politicians in their charred and bullet-ridden vehicle.
D'Aubuisson was the son of the late founder of El Salvador's ruling Arena Party, Roberto D'Aubuisson.
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