The same reason thousands of innocent people were held in confinement and later released. Panice, Chaos and a lot of Government STUPIDITY!
Ever heard of Daniel M. Lewin! A brave former Israeli Commando who died trying to fight the Islamic Animals on 9/11!
Was he notified by the Israeli Mossad?
Obviously not so dont ever dare go into your anti-semitic theories of how it is all a Zionist plot!
If emotion is all you have to contribute, don't bother.
If you have any information, that corrects the FBI BOLO, the statements of sources close to the investigation, or the New York Times September 13,2001 report that stated categorically the indivuals detained were set up to videotape the event prior to the first impact, please post it.