2026/07/21

Former FBI Special Agent Scott Decker Breaks Down the Amerithrax Investigation

In this interview, I speak with former FBI Special Agent Scott Decker about one of the most fascinating and complex criminal investigations in modern American history: Amerithrax.

In the weeks following 9/11, the United States was struck by a series of deadly anthrax attacks that killed five people, sickened seventeen others, and triggered one of the largest investigations ever conducted by the FBI.

During our conversation, we discuss how the investigation began, why investigators initially considered al-Qaeda as a possible suspect, how the FBI developed groundbreaking microbial forensic techniques to trace the anthrax spores, and why the investigation ultimately focused on Bruce Ivins.