Ramzi bin-al Shibh was captured Sept. 11, 2002, in Karachi, Pakistan. President George W. Bush afterward hailed the joint Pakistan-US operation as proof of a "relentless" US effort to "one by one ... hunt the killers down."
One of the first five names on the FBI's list of "Most Wanted Terrorists," the alleged head the 9/11 hijackers cell in Germany wired funds to militants in America, including Marwan al-Shehhi, the hijacker-pilot who crashed United Airlines Flight 175 into the World Trade Center. He is now a detainee at Guantánamo Bay.