That was my first thought. To whom was this package supposed to be delivered, and did the police start looking for the Canadian contact before the news media splashed that info around?
They had time. Ibrahim died on April 11th, and this story wasn't reported till late last week.
By the way, note that Ibrahim died at the climax of the Iraq war. Plus, the decision to send the anthrax through him must have been made at least several days earlier. Maybe around the time the Iraq war started.