Panel: FBI Overstated Science behind Anthrax Probe

Tuesday, 15 Feb 2011 11:36 AM

 

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HAGERSTOWN, Md. (AP) — Federal investigators overstated the strength of the scientific evidence against a late Army researcher blamed for the anthrax mailings that killed five people in 2001, a panel of scientists said Tuesday after an 18-month review. However, the panel didn't contradict the FBI's conclusion that the researcher was behind the letters.

The National Research Council committee scheduled a briefing in Washington on its 170-page report, which examines the novel microbial forensic techniques used by the FBI to determine that Bruce Ivins acted alone in making and sending the powdered spores.

"We find the scientific evidence to be consistent with their conclusions but not as definitive as stated," said Lehigh University President Alice P. Gast, who chaired the 16-member panel.

The FBI said in a written statement that its conclusions were based on a traditional investigation as well as scientific findings. The agency said the science provided leads but that science alone rarely solves cases.

"The FBI has long maintained that while science played a significant role, it was the totality of the investigative process that determined the outcome of the anthrax case," the agency said.

Gast declined to comment on the guilt or innocence of Ivins, who died of an apparently intentional Tylenol overdose in 2008 as the U.S. Justice Department prepared to indict him for the attacks. He had denied involvement, and his lawyer and some colleagues have maintained he was an innocent man hounded to self-destruction.

Early last year, the FBI formally closed its investigation into the anthrax letters that unnerved a nation still reeling from the 9/11 attacks, saying it had concluded that Ivins planned and executed the mailings by himself.

Five people died in October and November 2001 from anthrax inhalation or exposure linked to the letters. They were a Florida photo editor, two postal workers in Washington, a hospital employee in New York City and a 94-year-old woman in Oxford, Conn. Seventeen others were sickened.

Postal facilities, U.S. Capitol buildings and private offices were shut for inspection and cleaning by workers in hazardous materials suits from Florida to New York and elsewhere.

Investigators have acknowledged that the case against Ivins, who worked at Fort Detrick in Frederick, is circumstantial. Still, Jeff Taylor, the United States Attorney for the District of Columbia, said in 2008 that prosecutors could prove to a jury beyond a reasonable doubt that Ivins was responsible for the attacks.

The FBI asked the congressionally chartered council to validate its use of new and emerging science in the investigation.

The panel said the science didn't support the Justice Department's statement in a 2010 report that "the anthrax mailer must have possessed significant technical skill," an assertion that narrowed who could have been responsible.

Various experts told the panel it could have taken anywhere from two days to several months to prepare the spores.

"Given uncertainty about the methods used for preparation of the spore material, the committee could reach no significant conclusions regarding the skill set of the perpetrator," the report states.

The report also challenges investigators' conclusion that the parent material of the Ames anthrax spores used in the attacks came from a flask labeled RMR-1029 that was created and solely maintained by Ivins.

"The scientific link between the letter material and flask number RMR-1029 is not as conclusive as stated" by the Justice Department, the report says. The committee and investigators agreed, though, that spores from the flask would have required one or more intermediary growth steps to become the material in the letters.

The report reveals that the FBI pursued a possible al-Qaida link to the mailings by trying without success to grow anthrax from swabs and swipes taken from an unspecified overseas site at which a terrorist group's anthrax program was allegedly located. The samples had tested positive for Ames anthrax — false positives aren't unusual — but wouldn't grow spores, according to sketchy information in a newly declassified document that the FBI gave the committee December or January.

The committee said the methods used in the inconclusive tests should be explored in more detail.

___

AP reporters Pete Yost and Matt Apuzzo in Washington contributed to this report

© Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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