The media seem to think Steven Hatfill, the guy whose apartment was searched by the FBI last week and former infectious disease researcher for the Army, is the anthrax mailer. Kristoff says Hatfill (Kristoff calls him "Mr. Z," presumably so he won’t be sued for liable) gave some friends who visited him Cipro, he has connections to a Rhodesian army who used anthrax in the late 70s and his security clearance was suspended less than a month before the mailings. Laura Rozen of The American Prospect has news clips of him warning about bioterror attacks. (Bonus for the conspiracy theorists: The Globe and Mail collected info on the "[s]uspicious deaths" of eleven of the world’s leading microbiologists.) [1, 2]
Anthrax Missing From Army Lab A story of lax security, missing Anthrax and anti-Arab harrassment. Quoted in the article is a Dr. Rosenberg who issued a report stating, "The FBI has surely known for several months that the anthrax attack was an inside job." Then why hasn’t anyone been arrested? Two reasons: "a fear that embarrassing details might become public, and a need for secrecy in order to acquire sufficient hard evidence to convict the perpetrator."