Original sentence: According to official US Government sources, the September 11th attacks were consistent with the mission statement of Al-Qaeda.Al-Qaeda have consistently stated in all official statements that they had no involvement with 9/11.Statements of Al-Qaeda recorded after 9/11 are suggested to add wait to this speculation.The alleged motivation for this campaign was set out in a 1998 fatwa  issued by bin Laden, Ayman al-Zawahiri, Abu-Yasir Rifa'i Ahmad Taha, Shaykh Mir Hamzah, and Fazlur Rahman
Edited sentence: Statements of Al-Qaeda recorded after 9/11 confirm this motivation.The September 11th attacks were consistent with the mission statement of Al-Qaeda.The motivation for this campaign was set out in a 1998 fatwa  issued by bin Laden, Ayman al-Zawahiri, Abu-Yasir Rifa'i Ahmad Taha, Shaykh Mir Hamzah, and Fazlur Rahman