Some of the 9/11 terrorist plans, the commission staff said, called for the hijacked jets to be crashed into the headquarters of the Federal Bureau of Investigation and the Central Intelligence Agency, various nuclear power plants, and skyscrapers in California and Washington State, a captured leader of Al Qaeda, Khalid Sheikh Mohammed, has told interrogators.

Mr. Mohammed, who is believed to have originated the idea for the Sept. 11 attacks and whose nephew, Ramzi Yousef, was the mastermind of the 1993 bombing of the World Trade Center, was seized in Pakistan in March 2003 and is being held at an undisclosed location.

Mr. Mohammed has told his questioners that he planned to fly the 10th jet himself. But rather than crashing it into a target, he would have killed every male passenger on board, then contacted American news organizations and landed the craft at a United States airport. Then he would have made a speech denouncing Washington’s Middle East policies and released all of the women and children on the plane.

Mr. bin Laden vetoed that element of the operation.

Original Plan for 9/11 Attacks Involved 10 Planes, Panel Says

Published: June 16, 2004