Frontline: Evidence Questioned in 2001 Anthrax Case

In 2001, five people were killed and another seventeen injured by anthrax that had been sent through the mail. The FBI declared the late Bruce Ivins was responsible for the attacks. Ivins had worked at the government's bio-defense labs. A new investigation by Frontline, Pro Publica and McClatchy Newspapers has found new inconsistencies in the government's case against Ivins.