The story

Prosecutors likely would have sought the death penalty against a researcher who killed himself after learning he was going to be charged in the 2001 anthrax killings, two sources told CNN on Friday.

Three sources familiar with the investigation said the case soon will be closed because a threat no longer exists. No information has been made public about what charges were planned.

Authorities had been investigating Bruce Ivins, 62, a former researcher at the Army Medical Research Institute of Infectious Diseases, a bioweapons laboratory at Fort Detrick, Maryland, according to the sources, who spoke on the condition of anonymity because the investigation is still officially open. Ivins had been working at Fort Detrick trying to develop a vaccine against the deadly anthrax toxin. Read full article »

CNN's Kevin Bohn, Kelli Arena and Mike Ahlers contributed to this report.

All About AnthraxFederal Bureau of InvestigationSteven Hatfill

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