The group is strongly suspected in the 1974 assassination of Jesuit priest Carlos Mugica, a friend of Mario Firmenich, the founder of Montoneros. Other people murdered by the organisation include Silvio Frondizi, brother of former president Arturo Frondizi; Julio Troxler, former-vice director of the police; Alfredo Curutchet, a defense attorney for political prisoners; and Hipólito Atilio López, a key union leader of Córdoba. The CONADEP commission on human rights violations documented the Triple A's execution of 19 homicides in 1973, 50 in 1974 and 359 in 1975, while its involvement in several hundred others is also suspected.