Here's an in-depth look at the life of Khalid Sheikh Mohammed.
Personal: Birth date: March 1, 1964 or April 14, 1965 (both are used)
Birth place: Kuwait, carries a Pakistani passport.
Education: North Carolina A&T University, Mechanical Engineering, 1986
Other Facts: Has been called "the mastermind of the September 11th attacks."
Has been linked to nearly every al Qaeda attack between 1993 and 2003.
Timeline: January 1995 - Mohammed first comes to the attention of the F.B.I. and C.I.A. because of his involvement in a failed plot to blow up as many as a dozen American commercial airliners over the Pacific. After a fire in the Manila apartment where the planning took place, the Manila police discover a computer where the plans were laid out and arrest some of the conspirators.
1995 - Mohammed is linked to a plot to assassinate Pope John Paul II during his visit to Manila.
1996 - Is indicted on seven counts of terror conspiracy in the Southern District of New York for his alleged involvement in a Philippines-based plot to blow up 12 U.S.-bound commercial airliners in 48 hours. Referred to as the "Bojinka Plot."
1996 - Osama bin Laden meets with Mohammed.
1998 - Is linked to bombings of U.S. Embassies in Kenya and Tanzania.
October 2000 - Is linked to the bombing of the USS Cole.
September 11, 2001 - Is linked to the terrorist attacks on the World Trade Center and Pentagon.
2001 - Is linked to Richard Reid's foiled attempt to blow up an airliner with a shoe bomb.
October 2001 - Put on the FBI list of 22 Most Wanted Terrorists.
2002 - Al Qaeda expert Rohan Gunaratna says Mohammed ordered the killing of Wall Street Journal reporter Daniel Pearl saying "Daniel Pearl was going in search of the al Qaeda network that was operational in Karachi, and it was at the instruction of Khalid Sheikh Mohammed that Daniel Pearl was killed."
October 2002 - Is linked to the Bali nightclub bombing that killed more than 200 people.
November 2002 - Is linked to the bombings at the El Ghriba synagogue, in Djerba, Tunisia.
March 1, 2003 - Mohammed is captured in a house in Rawalpindi, Pakistan, along with a Pakistani political leader, Ahmed Abdul Qadoos, Mustafa Ahmed al-Hisawi (another alleged Al Qaeda operative), and Jamaat Islami.
September 6, 2006 - The U.S. acknowledges Mohammed has been held at a secret overseas CIA prison and is being transferred to Guantanamo Bay, Cuba where he will face a trial before a military commission.
March 15, 2007 - In a 26-page transcript released by the Pentagon, Mohammed admits decapitating Daniel Pearl and responsibility for the Richard Reid shoe bomber attempt to blow up an airliner over the Atlantic Ocean, the Bali nightclub bombing in Indonesia, the 1993 World Trade Center attack and other attacks that did not play out. "I was responsible for the 9/11 operation, from A to Z."
February 11, 2008 - The U.S. announces it will seek the death penalty against Mohammad, along with Mohammed al-Qahtani, Ramzi bin al-Shibh, Ali Abd al-Aziz Ali, Mustafa Ahmed al-Hawsawi, Walid bin Attash, and Mohammed bin Attash, for charges related to the 9/11 attacks which include: conspiracy, murder in violation of the law of war, attacking civilians, attacking civilian objects, intentionally causing serious bodily injury, destruction of property in violation of the law of war, and terrorism and material support of terrorism.
June 5, 2008 - The arraignment for Khalid Sheikh Mohammed and four co-defendants begins. Mohammed tells the judge, Marine Col. Ralph Kohlmann, that he wishes to represent himself, understands the charges against him could lead to the death penalty, and wishes to plead guilty to all charges in connection with his role in the 9/11 attacks and become a martyr.
April 16, 2009 - The U.S. Justice Dept. releases a 2005 memo which states that Mohammed was waterboarded 183 times in March 2003.
November 13, 2009 - The Justice Dept. announces five Guantanamo Bay detainees, including Mohammed, will be transferred to New York for trial in a U.S. District Court courtroom just blocks from the site where the World Trade Center twin towers stood until September 11, 2001.