(Newser) -
Investigators have DNA evidence that links biodefense expert Bruce Ivins to the deadly 2001 anthrax attacks, but the case is largely circumstantial, the New York Times reports. Prosecutors have linked the anthrax used in mailings targeting news networks, newspapers, and Congress with a flask used by Ivins at his Maryland lab, but at least 10 people had access to the flask, a source tells the Times. Ivins is also linked to prestamped envelopes used in the attack, which were sold at a Maryland post office he frequented .
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