On 27 June 1981, in the Abuzar Mosque in Tehran, Iran, Ali Khamenei was injured after he gave a speech for prayers, when a bomb placed on the tape recorder in front of him exploded, damaging his arm, vocal cords and lungs.

[1]: 32 In the early years after the Iranian revolution, two parties called Imam and Liberal Line were forces in the official political structure of the country.

[clarification needed] After the lack of political adequacy of Banisadr for the presidency in the Islamic Consultative Assembly on 30 June 1981, Khamenei spoke in agreement with the plan.

On 27 June 1981,[4] while Ali Khamenei had returned from the frontline and had visited the Ayatollah Khomeini, he went to the Abuzar Mosque to give a speech to the prayers as per his Saturday schedule.

A tape recorder with papers was set on the desk in front of Ali Khamenei by a young man who pressed the play button.