On June 6, 1987, the recently retired Colonel Roberto Díaz Herrera, resentful that Noriega had broken the agreed-upon "Torrijos Plan" of succession that would have made him the chief of the military after Noriega, decided to denounce the regime. He revealed details of electoral fraud, accused Noriega of planning Torrijos's death and declared that Torrijos had received 12 million dollars from the Shah of Iran for giving the exiled Iranian leader asylum. He also accused Noriega of the assassination by decapitation of then-opposition leader, Dr. Hugo Spadafora.