The Hojjatiyeh Society in Iran:

Abstract: The Hojjatiyeh Society is one of the most fascinating religious groups in modern Iran. The society started its way in the 1950s as an anti-Baha'i movement but found itself fighting Khomeini's Velayat-i Faqih and leading an anti-Khomeini and messianic agenda. Despite the Hojjatiyeh's fight against Khomeini, the Hojjatiyeh became, unwillingly and unintentionally, a leading faction in the Islamic Revolution, with its members coming to occupy some of the highest echelon posts in Iranian politics. The Hojjatiyeh was dismissed in 1983 by Khomeini, but it seems it never truly left the political sphere until today, when its traces can still be found on Iranian politics. Even Mahmoud Ahmadinejad and his mentor the Ayatollah Mesbah-Yazdi are reported to be Hojjatiyeh members. (from academia.edu)