Mehdi Karrubi claims that the tensions between Montazeri and Khomenei began in around October 1986 when Montazeri sent a letter to the latter, criticising and questioning the foundation of the state. Montazeri's troubles became further evident due to his association with Mehdi Hashemi who ran an organization out of Montazeri's office which sought to export the Islamic revolution. Hashemi is thought to have embarrassed Akbar Hashemi Rafsanjani by leaking information of his connection with the Iran-Contra affair. Subsequently Hashemi was arrested, convicted and executed in September 1987 on charges of counterrevolutionary activities.