Ayatollah al-Sayyid Muhammad Baqir Muhsin al-Hakim at-Tabataba'i (8 July 1939 – 29 August 2003; Arabic: السيد محمد باقر محسن الحكيم الطباطبائي), also known as Shaheed al-Mehraab, was a senior Iraqi Shia Islamic Scholar and the leader of the Supreme Council for Islamic Revolution in Iraq (SCIRI).

[3] Al-Hakim was a contemporary of Ayatollah Khomeini, and The Guardian compared the two in terms of their times in exile and their support in their respective homelands.

[6] He co-founded the modern Islamic political movement in Iraq in the 1960s, along with Mohammad Baqir al-Sadr, with whom he worked closely until the latter's death in 1980.

[6] In an event, Mohammad Baqir Al-Sadr sent Al-Hakim to calm the people who were trapped by Saddam Hussein's government troops between Karbala and Najaf.

[1] Safely in Iran under the protection of the Iranian government, Al-Hakim became an open enemy of the Ba'athists, forming the Supreme Council for the Islamic Revolution in Iraq (SCIRI),[4] a revolutionary group dedicated to overthrowing Saddam Hussein and installing clerical rule.

[2] There he emerged as one of the most influential Iraqi leaders, with his longtime opposition to Saddam gaining him immense credibility, especially among the majority Shia population.

[8] Although Al-Hakim publicly urged the abandonment of violence, his Badr Brigade was described by The Independent as "one of the main groups accused of carrying out sectarian killings".

[13] On 30 August 2003, Iraqi authorities arrested four people in connection with the bombing: two former members of the Ba'ath Party from Basra, and two non-Iraqi Arabs from the Salafi sect.

[15][16] Oras Mohammed Abdulaziz, an alleged Al-Qaeda militant, was hanged in Baghdad in July 2007 after being sentenced to death in October 2006 for his role in the assassination of al-Hakim.