Since 1974, the Inter-American Commission on Human Rights and the United Nations Commission on Human Rights have been the first international human rights bodies to react to the phenomenon of disappearances, following complaints made in connection with cases Chile since the military coup of 11 September 1973. The report of the Working Group to Investigate the Situation of Human Rights in that country, which was submitted to the United Nations Commission on 4 February 1976, illustrated for the first time such a case, the one of Alphonse-René Chanfreau, of French origin, arrested in July 1974 at his home in Santiago de Chile.