From these posts, it is noted that Atta had had 12 addresses, two places he lived and 10 safe houses. Also, he was wired money in Florida on Sept. 8 and 9, when he was supposedly in Baltimore.
http://www.cooperativeresearch.org/timeline.jsp?timeline=complete_911_timeline&al-qaeda_members=mohamedAttaMid-September 2001: Private Consumer Databases Reveal Large Credit Card Debt, Multiple Residences of Hijackers
In a 2002 speech, former President Bill Clinton will relate information he says he learned from a close friend who works at Acxiom, the world's largest processor of consumer data. According to this friend, a couple of days after 9/11, FBI agents arrive at Acxiom and discover information about five of the 9/11 hijackers in Acxiom's computer databases. Clinton relates, “One of the men who flew an airplane into the World Trade Center
had 30 credit cards, a quarter of a million of dollars in debt, and a consolidated payout schedule of $9,800 a month. ... Mohamed Atta, the ring leader, had 12 addresses, two places he lived and 10 safe houses, under the names Mohamed Atta, Mohammed J. Atta, J. Atta, and his middle initial spelled out.” No information like this will be revealed by any subsequent official 9/11 investigations, except for a vague one sentence reference in a 9/11 Commission Report footnote that “Searches of readily available databases could have unearthed” valuable information on at least some of the hijackers. <9/11 Commission Final Report, 7/22/2004, p. 539>
. . .
September 8-11, 2001: Last-Minute Money Transfers Between Hijackers and United Arab Emirates
The 9/11 hijackers send money to and receive money from a man in the United Arab Emirates (UAE) who uses the aliases “Mustafa Ahmed,” “Mustafa Ahmad,” and “Ahamad Mustafa.” This “Mustafa” transfers money to Mohamed Atta in Florida on September 8 and 9 from a branch of the Al Ansari Exchange in Sharjah, UAE, a center of al-Qaeda financial dealings.