"Concentrated anthrax spores were used for bioterrorism in the 2001 anthrax attacks in the United States, delivered by mailing postal letters containing the spores. The letters were sent to several news media offices and two Democratic senators: Tom Daschle of South Dakota and Patrick Leahy of Vermont. As a result, 22 were infected and five died. Only a few grams of material were used in these attacks and in August 2008, the US Department of Justice announced they believed that Dr. Bruce Ivins, a senior biodefense researcher employed by the United States government, was responsible. These events also spawned many anthrax hoaxes." - Wikipedia
"More than 8 years later, on 19 February 2010, the 92-page “Amerithrax Investigative Summary,” based on some 2700 pages of documents, was finally published. It officially closed the FBI's investigation.
It concluded that Bruce Ivins, a microbiologist and leading research scientist studying vaccines and cures for exposure to anthrax at the U.S. Army Medical Research Institute of Infectious Diseases (USAMRIID), was the sole perpetrator, acting alone in planning and executing these acts of terrorism.
The Bureau reported that the anthrax spores in the letters were genetically connected to unique anthrax spores that Ivins had developed and maintained in his laboratory at USAMRIID.
Although the FBI stated that its investigation went beyond scientific evidence and included interviews and other information as part of what it considers a firm case incriminating Ivins, on 15 February 2011 a panel of scientific experts assembled by the National Academy of Sciences, at the request of the FBI, independently evaluated the Bureau's genetic analysis of the anthrax spores.
In doing so, this group of highly trained personnel advised that the scientific evidence put forth by the FBI was insufficient to prove that Ivins was the culprit.
Furthermore, recently filed official papers have acknowledged that the “hot zone” sealed area in Ivins' laboratory did not contain the equipment needed to turn liquid anthrax into the refined anthrax powder that was present in the letters, and that the laboratory lacked the facilities in 2001 to manufacture the kind of spores found in the letters.
Bruce Ivins' suicide in 2008 precluded a legal resolution of his guilt or innocence."
Larry M. Bush, MD; Maria T. Perez, MD
anthrax: The Anthrax Attacks 10 Years Later
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