Ammar al-Baluchi is a High Value Detainee who had been held by the U.S. at the Guantanamo Bay detention camp, and is now to be tried in the U.S. District Court action, U.S. v. Khalid Sheikh Mohammed, et al., for directly planning and directing the 9-11 Attack. He is of Pakistani nationality, from the Baluchistan region, and was captured in Karachi, Pakistan on 29 April 2003., He is also known as Ali Abdul Aziz Ali, Mosh, Ali Abdulaziz Ali, 'Ali 'Abd al-'Aziz 'Ali, and Ali Abd al-Aziz Ali.
Khalid Sheikh Mohammed is his uncle; he was an aide to him and a student of his cousin Ramzi Yousef. In August 2001, he sought to join the 9-11 hijackers but was denied a U.S. visa because he appeared to be an economic immigrant. 
- ICRC Report on the Treatment of 14 "High Value Detainees" in CIA Custody, International Committee of the Red Cross, February 14, 2007
- Ali Abdulaziz Ali, Globalsecurity