The Washington Post will later report, “In May 2001, the CIA learned supporters of bin Laden were planning to infiltrate the United States; that seven were on their way to the United States, Canada and Britain; that his key operatives ‘were disappearing while others were preparing for martyrdom,’ and that bin Laden associates ‘were planning attacks in the United States with explosives.’” [US Congress, 9/18/2002; Washington Post, 9/19/2002] This information may be related to a warning given by captured al-Qaeda operative Ahmed Ressam this month that al-Qaeda leader Abu Zubaida is seeking Canadian passports for himself and five other top militants in order to plant explosives in US cities (see May 30, 2001 and May 2001). [Calgary Herald, 4/3/2002] It is not known if the seven traveling to the US, Canada, and Britain refer to any of the 9/11 hijackers, but 11 of the hijackers travel to the US in May and June (see April 23-June 29, 2001), stopping in Britain along the way (see January-June 2001). Investigators will later say that they are not sure if the aliases Zubaida wanted on the Canadian passports could have been used by some of the 9/11 hijackers. [Calgary Herald, 4/3/2002]