Bosch had left Cuba in July 1960 after helping to organize a failed anti-Castro rebellion in the Escambray Mountains, and continued participating in anti-Castro activities after moving to Miami. Bosch helped organize the "Movimiento Insurreccional de Recuperacion Revolucionaria" (Insurrectional Movement of Revolutionary Recovery, MIRR), which conducted attacks on factories and sugar mills in Cuba, and claimed to be responsible for 11 bombing attacks against government property. From January to November 1962, and again in November 1963, Bosch was in contact with the US Central Intelligence Agency (CIA). On the first occasion, Bosch was intended to help plan infiltration efforts into Cuba, and obtained supplies and safe houses for the team; on the second, Bosch sought funding for airstrikes against Cuba, which the CIA denied. A CIA memorandum from 1976 described Bosch as "General Coordinator" of the MIRR at the time of his contact with the CIA.