| Event Details |
 | Primary Organization | Al-Qaeda |
 | Location | Yemen |
 | Time | Summer 1999 |
 | Participants | Tawfiq bin Attash |
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| Narrative and Notes |
 | Reliable | Khallad was arrested sometime in 1999 while driving the car of another Cole conspirator who was wanted by Yemeni authorities. He was released after both his father, a known extremist, and Osama bin Laden, contacted Yemen to demand his release.1 |
 | Possible | Bin Laden apparently suggested to the Yemeni official he contacted that al-Qaeda would leave Yemen alone if Khallad was released.1 |
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| Sources |
| 1The 9-11 Commission Final Report. July 22, 2004. Chapter 5.2. |
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| Key to bullets |
High confidence |
Some confidence |
Low confidence |
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