Khalid Sheikh Mohammed: The suspected mastermind of the Sept. 11 attacks, he was captured near Islamabad, Pakistan, in March 2003 by Pakistani authorities and CIA officers.
Ramzi Binalshibh: He is believed to have helped plan the Sept. 11 attacks and allegedly was a lead operative for a foiled plot to crash aircraft into London's Heathrow Airport. He was captured in September 2002 in Karachi, Pakistan.
Abu Zubaydah: He was believed to be a link between Osama bin Laden and many al-Qaeda cells before he was captured in Pakistan in 2002.
Ali Abd al-Aziz Ali: He is accused of serving as a key lieutenant to Khalid Sheikh Mohammed in Pakistan and delivering funds to the Sept. 11 hijackers.
Ahmed Khalfan Ghailani: He allegedly helped coordinate the 1998 bombings of the U.S. Embassies in Kenya and Tanzania. He was arrested in Gujrat, Pakistan in July 2004.
Riduan Isamuddin: He is believed to be the main link between al-Qaeda and Jemaah Islamiyah, the regional terror group blamed for the 2002 Bali bombings that killed 202 people. He was arrested in Thailand in 2003.
Mustafa Ahmad al-Hawsawi: He reportedly arranged financing and travel for those involved in the Sept. 11 plot from his post in Dubai, United Arab Emirates.
Mohammed Nazir Bin Lep: He allegedly helped transfer al-Qaeda funds for a 2003 car bombing at a hotel in Jakarta, Indonesia, that killed 12 people.
Majid Khan: He was allegedly being groomed by Khalid Sheikh Mohammed for an attack inside the United States.
Waleed bin Attash: He was an alleged al-Qaeda operative accused of serving bin Laden as a bodyguard. Authorities say bin Laden selected him as a Sept. 11 hijacker, but he was prevented from participating when he was arrested and briefly detained in Yemen in early 2001.
Abd al-Rahim al-Nashiri: He is the suspected mastermind of the October 2000 bombing of the U.S. destroyer Cole and al-Qaeda's operations chief in the Arabian Peninsula until he was caught in 2002.
Abu Faraj al-Libi: He was regarded by Pakistani intelligence as a successor to Khalid Sheikh Mohammed as the al-Qaeda No. 3 and became the most wanted man in Pakistan for masterminding two bombings 11 days apart in December 2003 that targeted President Pervez Musharraf.
Mohd Farik Bin Amin: He allegedly assisted Jemaah Islamiyah's operational planner case targets for planned attacks. He is believed to have been tapped to be a suicide operative for an al-Qaeda attack on Los Angeles.
Gouled Hassan Dourad: He allegedly headed a Mogadishu, Somalia-based network that supported al-Qaeda members in the country.
