On Tuesday, 30 May 1961, Trujillo was shot and killed when his blue 1957 Chevrolet Bel Air was ambushed on a road outside the Dominican capital. He was the victim of an ambush plotted by a number of men, such as General Juan Tomás Díaz, Pedro Livio Cedeño, Antonio de la Maza, Amado García Guerrero and General Antonio Imbert Barrera. The plotters, however, failed to take control as the later-executed General José René Román Fernandez ("Pupo Román") betrayed his co-conspirators by his inactivity, and contingency plans had not been made. On the other side, Johnny Abbes, Roberto Figueroa Carrión, and the Trujillo family put the SIM to work to hunt the members of the plot and brought back Ramfis Trujillo from Paris to step into his father's shoes. The response by the SIM was swift and brutal. Hundreds of suspects were detained, many tortured. On 18 November the last executions took place when six of the conspirators were executed in the "Hacienda María Massacre." Imbert was the only one of the seven assassins who survived the manhunt. A co-conspirator named Luis Amiama Tio also survived.