Doubts persist that troubled scientist was anthrax killer | WHAT REALLY HAPPENED

Doubts persist that troubled scientist was anthrax killer

Nearly seven years and many millions of dollars later, the FBI concluded Haigwood had been right: the anthrax killer had been at the investigators' side all along. Prosecutors said they believed they had the evidence to prove Ivins alone carried out the attacks, but their assertions met with skepticism among some scientists, lawmakers and co-workers of Ivins.

With the FBI preparing to close the case, The New York Times reviewed the investigation, interviewing dozens of Ivins' colleagues and friends, reading hundreds of his e-mails, and obtaining, for the first time, police reports on his suicide in July.

That examination found that unless new evidence were to surface, the public investment in the case would appear to have yielded nothing more persuasive than a strong hunch, based on a pattern of damning circumstances, that Ivins was the perpetrator.