Its work was supported by the Commission of Criminologists, which investigated atrocity charges. The ad hoc committee was finally successful in bringing about negotiations between the parties, leading to the establishment of a provisional government on September 3 under Hector Garcia-Godoy and to the election on June 1, 1996, of Joaquin Balaguer as President. The last contingents of the Inter-American Peace Force left the Republic on September 20, 1966