Soon afterwards , he was captured and imprisoned in Rawson , Chubut . He was part of the group of insurgents that organized the prison break that occurred during the night of 15 August 1972 . Only six out of 110 were able to make a successful escape ; 19 were recaptured and 16 were executed ( see Trelew massacre ) . The successful ones , Gorriarán Merlo among them , fled to Chile , at that time under the Socialist administration of Salvador Allende , and from there were granted safe passage to Cuba . He returned to Argentina a few months later . In January 1974 , he took part in the attack on the army barracks in Azul , Buenos Aires Province , where a Lieutenant Colonel and his wife were killed
Trelew massacre
Trelew massacre
Enrique Gorriarán Merlo