Trujillo began to interfere more in the domestic affairs of neighboring countries. He expressed great contempt for Venezuelan President Rómulo Betancourt. An established and outspoken opponent of Trujillo, Betancourt associated with Dominicans who had plotted against the dictator. Trujillo developed an obsessive personal hatred of Betancourt and supported numerous plots by Venezuelan exiles to overthrow him. This pattern of intervention led the Venezuelan government to take its case against Trujillo to the Organization of American States (OAS). That infuriated Trujillo, who ordered his agents to plant a bomb in Betancourt's car. On 24 June 1960, while Betancourt was driving through the streets of Caracas, Venezuela, during the annual Army Day parade, a powerful bomb exploded in his motorcade. The bomb had been placed in a green Oldsmobile parked near the parade route and contained 65 kilograms of TNT. The blast exploded right under the car carrying Betancourt and his party. The car was sent flying across the street. One person in the auto was killed, and Betancourt suffered severe burns to his hands.