 Abu Musab al-Zarqawi, Abu Musab al-Suri, Abdullah Azzam, Ayman al-Zawahiri, and Osama bin Laden were cited by Abu Khalid when he addressed ISIL.On February 21, 2014 five men entered al-Suri's headquarter compound in Aleppo and opened fire, then one of the gunman detonated his explosive pack.The attack killed al-Suri and six of his men.