In this document, the US Embassy in Buenos Aires suspects that Argentine security forces were involved in the murders of Uruguayan politicians Zelmar Michelini and Hector Gutierrez Ruiz.

In this telegram, the State Department reports on the situation of refugees in Argentina and claims that 'it is possible but not proved' that regional governments are cooperating to eliminate high-profile political opponents.

In this document, the US Assistant Secretary of State, Harold Saunders writes to the Secretary of State, Henry Kissinger about the recent assassinations of former Bolivian President Juan Jose Torres and Uruguayan legislators Zelmar Michelini and Hector Gutierrez. These high-profile cases lead Saunders to question the degree of regional cooperation.

This is a telegram from the US Embassy in Argentina addressed to the State Department in Washington and the US Embassies in Uruguay, Chile, and Brazil. It mentions that around fourteen refugees from South American countries have been either captured or killed in a raid in an Argentine province on 29 March 1976. The Embassy reports that Chilean leader of the Revolutionary Left Movement (MIR) was abducted during the raid and was, probably, assassinated afterwards.

This is a warning from the US State Department to the US Embassies of Uruguay, Paraguay, Chile, Brazil, and Bolivia regarding the potential international repercussions of the violent deaths of nationals of their respective countries abroad. The State Department asks for evidence of international arrangements for the assassination and/or refoulment of refugees.

The US Embassy in Buenos Aires informs the State Department that the body of former Bolivian President Juan Jose Torres has been found in Argentina. This event- alongside the recent assassinations of Uruguayan legislators Zelmar Michelini and Hector Gutierrez- lead the Embassy to suspect that the murders are part of a campaign to target leftist refugees in Argentina in order to spread fear among the entire exile community.

In this document, the US Ambassador to Brazil briefs the State Department in Washington on the case of a Brazilian national, Maria Regina Marcondes Pinto who was arrested by the Argentine authorities in Buenos Aires and handed over to the Chilean regime.

This is a report produced by the Washington Office on Latin America (WOLA) regarding the assassination of Uruguayan legislators Zelmar Michelini and Hector Gutierrez Ruiz. WOLA asserts that their abduction and assassination must have been instigated by the Uruguayan government and carried out by the Argentine government.

US Embassy in Buenos Aires briefs Secretary of State on deaths and disappearances of Chilean extremists and suspects the involvement of the Argentine government including cooperation with the Chilean government and with governments of Paraguay and Uruguay.

The US Ambassador to Argentina briefs the State Department on the two confirmed Chilean refugees killed in Argentina since January 1975, Sergio Montenegro Godoy and Victor Oliva.