The "Triple A" was believed to have been organized in 1973 by José López Rega and Alberto Villar, deputy chief of the Argentine federal police, during the brief interim presidency of Raúl Lastiri in 1973. Reportedly, the movement was conceived at a high-level Peronist meeting on October 1, 1973, attended by President Raúl Lastiri, Interior Minister Benito Llambí, Social Welfare Minister José López Rega, general secretary of the Presidency José Humberto Martiarena and various provincial governors. The group operated under the governments of Lastiri, Perón and Isabel Perón through López Rega resignation and exile in July 1975. Villar and his wife were murdered in 1974 with a bomb that was planted on his cabin cruiser in Tigre by members of the "Montoneros", a militant, leftist group.