Would-be 9/11 hijacker Ramzi bin al-Shibh flies out of Germany on September 5, 2001, and stays in Spain for a few days while on his way to Afghanistan. Bin al-Shibh knows the date of the 9/11 attacks by this time (see (August 20, 2001) and August 29, 2001). Investigators later believe he stays in a private home in Madrid, but it will not be revealed whose home this is. He never uses his return ticket to Germany. [Los Angeles Times, 9/1/2002]
Meeting with Atta? – 9/11 hijacker Mohamed Atta may also be in Spain on September 5 (see September 5, 2001). Bin al-Shibh and Atta met in Spain in July 2001 (see July 8-19, 2001), and there are suggestions they utilized a local al-Qaeda support network while they were there.
On to Afghanistan – Bin al-Shibh gets a set of false identity papers while in Spain. Then he flies to Greece, the United Arab Emirates, Egypt, and finally to Afghanistan. [McDermott, 2005, pp. 230]