
According to the well-known Muslim scholar, it is still not established "in a definitive way by the American secret services in their reports," of bin Laden's responsibility in the attacks that occurred in New York and Washington in 2001.
Source: http://www.adnkronos.com/AKI/English/Security/?id=1.0.1969289415 (published 3/13/2008)
See: Bin Laden and 9/11: The Evidence by David Ray Griffin