Margarita Belén massacre
The Margarita Belén Massacre (Spanish: Masacre de Margarita Belén) took place during the Dirty War in Argentina. It involved the torture and execution of 22 Montoneros, some of whom were killed after surrendering and laying down their weapons near the town of Margarita Belén, Chaco Province, on 13 December 1976, in a joint operation of the Argentine Army and the Chaco Provincial Police. One of the victims of the massacre, Néstor Carlos Salas, is reported to have been a Montoneros commander and took part in a number of guerrilla operations. Argentina was at the time ruled by the National Reorganization Process.
The massacre was one of many cases included in the Trial of the Juntas in 1985, two years after the end of the dictatorship. The Buenos Aires Federal Chamber found junta leader General Jorge Rafael Videla guilty of homicide. The Federal Chambers of Rosario and Paraná dictated the same sentence for General Cristino Nicolaides, junta leader General Leopoldo Galtieri and Santa Fe Provincial Police chief commissioner Wenceslao Ceniquel.
The late Ricardo Brinzoni, Secretary General of the Chaco military province during the dictatorship, and Chief of Staff of the Army from 1999 to 2003, has also been accused of responsibility for the massacre.