One of the most important operations carried out by SIDE was the planning of a triple assassination attempt in Europe with the collaboration of the Chilean DINA, and the Uruguayan intelligence service. The objective was to murder, if possible at the same time, three special personalities living in Paris, France: Isabel Allende (daughter of Salvador Allende, Chile), Rodolfo Matarollo (member of the ERP, Argentina), and Enrique Erro (ex-senator, Uruguay), all of them opposed the South American de facto regimes, and well known dissidents. The idea was originally suggested by DINA director Manuel Contreras, and was planned out in the Billinghurst base in Buenos Aires, previous approval of Argentine dictator Jorge Rafael Videla.