 On 24 March 1976 Isabel Perón was ousted and a military junta installed, led by General Jorge Rafael Videla.On 4 April 1976, Montoneros assassinated a naval commander (Jose Guillermo Burgos) and a Chrysler executive (Jorge Ricardo Kenny) and ambushed and killed three policemen in a patrol car.On 26 April 1976, Montoneros guerrillas killed Colonel Abel Héctor Elías Cavagnaro outside his home in Tucumán province.