In 1975, shortly before the military takeover the following year, Almirón fled to Spain with José López Rega, founder of Triple A, who had been appointed ambassador plenipotentiary by Isabel Perón.
Almirón was briefly located in 1983 in Spain, revealed to be working as chief of security for the former Interior Minister Manuel Fraga.
He was arrested in a subsidized flat in Torrent (Valencia) for murder by the National Police that month, under an extradition request from Argentina.
[citation needed] Almirón was born in 1936 in Puerto Bermejo, a small riverside town in Chaco Province, Argentina.
Although a member of the robbery task force, Almirón became an associate of the "Prieto gang," which during the early 1960s was one of the most notorious in the Greater Buenos Aires area.
After being appointed as Minister of Social Welfare, López Rega reinstated Almirón in the federal police, along with his father-in-law, Commissioner José Ramón Morales.
[1] In 1975, with public protests high against the economic plan called Rodrigazo, Isabel Perón appointed López Rega as ambassador plenipotentiary to Spain, and he took Almirón and Morales with him.
Almirón was present at the 1976 massacre in Montejurra, Spain of two left-wing Carlists, in which the Italian neofascist Stefano Delle Chiaie also participated.
According to Spanish lawyer José Angel Pérez Nievas, it is "probable that Almirón participated — along with Stefano Delle Chiaie and Augusto Canchi — in the 1980 bombing of the Bologna train station" in Italy.
[4] In December 2006, a reporter for El Mundo newspaper located Almirón living in Torrent, in a subsidized flat paid for by the Comunidad Valenciana region of Spain.
Almirón was arrested by the National Police in Torrent (Valencia), Spain on 29 December 2006, on murder charges under an Argentine extradition order, and returned to Argentina.
In 2008 the administration of José Luis Rodríguez Zapatero had refused Argentina's extradition request for former President Isabel Perón, who had been living for decades in Spain.