In the three days before their September 11 attacks, three terrorists wired money through various Western Union agencies to Mustafa Muhammad Ahmed, a top official in Osama bin Laden's organization

MOHAMED ATTA $2,000 Mail Boxes Etc., Laurel, Md. $2,000 Giant Supermarket, Laurel, Md.

WALEED M. ALSHERI $5,000 Logan Airport, Boston

MARWAN AL SHEHHI $5,400 Boston bus station

Data: Law enforcement agencies

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