 In 1970, as retribution for the June 1956 León Suárez massacre and Juan José Valle's execution, the Montoneros kidnapped and executed former dictator Pedro Eugenio Aramburu (1955–1958) and other collaborators.In November 1971, in solidarity with militant car workers, Montoneros took over a car manufacturing plant in Caseros, sprayed 38 Fiats with petrol, and set them afire.On 26 July 1972, they set off explosives in the Plaza de San Isidro in Buenos Aires, which injured three policemen and killed one fireman (Carlos Adrián Ayala), who died of wounds two days later.