Ammar Al-Baluchi ( , ; also transliterated as Amar Al-Balochi , born Ali Abdul Aziz Ali ) is a Pakistani citizen in U.S. custody at Guantanamo Bay detention camp . Charges against him include " facilitating the 9/11 attackers , acting as a courier for Osama bin Laden and plotting to crash a plane packed with explosives into the U.S. consulate in Karachi . " Member of the same al-Baluchi clan as Khalid Sheikh Muhammad ( KSM ) and Ramzi Yousef , U.S. officials state that he was a " key Lieutenant " of his uncle KSM who assisted KSM in the execution of the September 11 attacks , and that he told investigators that he had sought help in al-Qaeda 's efforts to develop biological weapons to use against its enemies
9/11 attackers
September 11 attacks
Ammar al-Baluchi