The death of Mostafa Khomeini
The chain of events began with the death of Mostafa Khomeini, chief aide and eldest son of Ruhollah Khomeini. He mysteriously died at midnight on 23 October 1977 in Najaf, Iraq. SAVAK and Iraqi government declared heart attack as the cause of death, though many believed his death was attributed to SAVAK. Khomeini remained silent after the incident, but in Iran with the spread of the news there was a wave of protest in several cities and mourning ceremonies in major cities were held.