Mohamed al-Zawahiri was imprisoned in 1999 after being detainedand extradited from the United Arab Emirates on allegations that he was linked to the 1981 assassination of Egyptian President Anwar Sadat.
In 2002, Arar was en route to Canada when he was detained by U.S. officials in New York and sent to Syria, where he was imprisoned for more than a year and endured severe beatings.