Using the available scientific evidence "it is not possible to reach a definitive conclusion" about the source of the anthrax used in the 2001 anthrax letter attacks which killed five people, according to a report issued Tuesday by the National Academy of Sciences.
The FBI announced that it has concluded its investigation into the 2001 anthrax mailings, saying Friday that a biodefense researcher carried out the attacks alone.
Dr. Bruce Ivins, the former government scientist blamed for a string of deadly 2001 anthrax attacks, behaved oddly and was "sarcastic and nasty" to his wife in the final weeks of his life, police documents said.
The man who authorities allege carried out the 2001 anthrax mailings that killed five people sent himself an e-mail saying he knew the attacker's identity, according to court documents released Wednesday.
The chairman of the of Senate Judiciary Committee said Wednesday he does not believe that Dr. Bruce Ivins acted alone in the deadly 2001 anthrax attacks
In an unusual move, an attorney for anthrax suspect Bruce Ivins, who committed suicide last month, is speaking up for the government, saying it should not be blamed for his death.
If Bruce Ivins carried out the anthrax attacks in 2001, the scientific and forensic evidence should prove it. Scientists are asking why the FBI hasn't released that information
Did overly aggressive tactics by federal agents drive the anthrax attack suspect to suicide? CNN's Brian Todd reports.
Could a piece of freeze-drying equipment be the answer in the anthrax case? Jeanne Meserve reports.
Anthrax suspect Bruce Ivins took several hours of administrative leave on the day it is believed two anthrax-laced letters were mailed, a government source said.
Time.com: The Anthrax Filesupdated: Thu Aug 07 2008 23:00:00
The FBI was on the trail of Army scientist Bruce Ivins for years. As investigators closed in, he committed suicide. But how credible was their case?
Federal agents hope two computers seized from a Frederick, Maryland, public library yield more clues regarding anthrax suspect Bruce Ivins, according to new case documents.
An anthrax victim's widow said new evidence about the suspect in the 2001 attacks released to the public supports her $50 million lawsuit blaming the federal government for her husband's death.
Former colleagues of Bruce Ivins, the man blamed for the 2001 anthrax attacks, accused federal agents Wednesday of hounding the government researcher and his family to the point where Ivins took his own life.
A federal prosecutor formally declared Army biological researcher Bruce Ivins the sole person responsible for creating and mailing the bacterial spores that killed five people in the 2001 anthrax attacks.
The Bush administration partially lifted the veil of secrecy Wednesday in the investigation into deadly anthrax mailings in 2001
Federal investigators will declare the 2001 anthrax case solved on Wednesday, when they make public their case against government researcher Bruce Ivins, a government source familiar with the case told CNN on Tuesday.
Federal officials say DNA linked Bruce Ivins' lab to the anthrax case. But until evidence is released, serious questions remain
Former Sen. Tom Daschle criticizes the anthrax investigation and defends Barack Obama's energy plan.
An intended recipient of one of the anthrax-laced letters sent in 2001's anthrax scare said Monday he was "very skeptical" of the government's investigation.
Friends say a scientist who killed himself amid an anthrax investigation fit many stereotypes, but biological terrorist was not one of them.
The FBI used advanced science to trace anthrax back to the biological weapons lab at Fort Detrick, where the highly specific type of toxin was overseen by scientist Bruce Ivins
DNA evidence from the deadly 2001 anthrax mailings led authorities to a suspect who officials say killed himself, according to a source familiar with the investigation.
Anthrax suspect Bruce Ivins wanted to go out in a 'blaze of glory.' CNN's Brianna Keilar reports
A government scientist tells The Associated Press that DNA from the bodies of people killed in the anthrax attacks helped lead investigators to the suspect
An anthrax researcher who committed suicide Tuesday had threatened his therapist and recently outlined a plan to kill his co-workers, according to audiotape of court testimony.
Researcher commits suicide after he learned charges were likely in 2001 anthrax deaths. CNN's Kelli Arena reports.
Many perplexing questions swirl around Bruce E. Ivins and his sudden death. For one: what info did the FBI actually have connecting him to the anthrax attacks?
CNN's Kelly Arena reports a suspect being investigated in the 2001 anthrax attacks has allegedly commited suicide.
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.
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