The Dominicans were angry that the Haitians permitted the heirs and followers of former Dominican dictator Rafael Leonidas Trujillo Molina (1891-1961) to use their country as a base for plotting subversive activities in the Dominican Republic. The Haitians accused the Dominicans of giving sanctuary to Haitian opponents of Francois "Papa Doc" Duvalier (1907-71), Haiti's repressive president. In April 1963, former Haitian army officers reportedly tried to kill Duvalier's children, and many of those accused took refuge in the embassies of Latin American countries in Port-au-Prince, the Haitian capital. When Haitian police raided the Dominican embassy and held captive 22 refugees, the Dominican Republic broke off diplomatic relations and threatened to invade Haiti. The Organization of American States (OAS) mediated the dispute and eased the tension; Dominican troops, ready to invade, pulled back from the border; and many of the refugees were granted safe conduct out of Haiti (about 500 others escaped to the Dominican Republic).