This is a New York Times piece and I got this bit from Lucianne. If you want to read the rest, you'll have to sign up at the NYT site.

WASHINGTON, Oct. 18 — Investigators pursuing the anthrax exposure cases in New York, Washington and Florida say they suspect that the rash of contaminated letters is related to the Sept. 11 attacks and are investigating the possibility that Al Qaeda confederates of the hijackers are behind the incidents. Senior government officials said they had not settled on any single theory but added that investigators were focusing on the ability of the hijackers or their accomplices to obtain highly refined anthrax from a foreign or domestic supplier. While they have not ruled out the possibility that another criminal could be behind the anthrax attacks, investigators are intensely looking at evidentiary threads linking the letters to the hijackers. Investigators are focusing on Mohamed Atta, a hijacking ringleader, who was interested in crop-dusting aircraft and once lived near the offices in Boca Raton, Fla., of American Media Inc., where the first victims worked. Crop-dusting airplanes could be used to spread anthrax or other toxins.

-- Anonymous, October 18, 2001

Answers

Hmmm...maybe he didn't get on a plane, and was just there to see the others got on?

I would assume they have film of him boarding?

-- Anonymous, October 19, 2001