Montazeri was killed in a bombing at the central headquarters of the then ruling party , Islamic Republican Party , in Tehran on 28 June 1981 . The Islamic Republic of Iran suspected various organizations and individuals , including SAVAK , the Iraqi regime , the People 's Mujahedin of Iran , the United States , royalist army officers , and " internal mercenaries " . It also executed 4 Iraqi agents and Mehdi Tafari for the incident . The death toll in the attack was 73 , including Behesti , cabinet ministers and the members of the Majlis . A state funeral was held for the victims on 30 June and a week of mourning was proclaimed . Montazeri was buried in the Fatima Masumeh Shrine in Qom where his father would also be buried on 21 December 2009
a bombing
Hafte Tir bombing
Mohammad Montazeri