The 2001 Anthrax Attacks: A Painful Reminder Resurfaces
A Pentagon sensor malfunctioned this morning and set off an anthrax alarm that locked down part of the building. Here is the case that made that one word powerful enough to clear a federal headquarters, laid out in order — from the man the case ended on, through the attacks themselves, to the day the government closed the file. Written for the many people who weren’t following at the time, or weren’t yet born.
This morning the Pentagon pushed people into corridors and locked down floors because a sensor reported anthrax. It was a malfunction. Nothing was there. But anthrax is still the word that empties a building on contact, and the reason runs back a quarter-century. Most people remember that the attacks happened. Far fewer remember how the investigation ended. Here is the whole sequence.
The Man Before the Case
April 22, 1946 — Bruce Edwards Ivins is born in Lebanon, Ohio, the youngest of three sons of a pharmacist.
Early 1960s — As an undergraduate at the University of Cincinnati, Ivins asks out a member of the Kappa Kappa Gamma sorority and is turned down. By his own later account, he becomes fixated on the sorority, a grievance he would carry for decades. He would tell investigators in 2008 that “they’ve been after me since the 1960s, and REALLY after me since the late 1970s.”
1968 to 1976 — Ivins earns three degrees at the University of Cincinnati, culminating in a PhD in microbiology in 1976.
1976 to 1978 — He breaks into the Kappa Kappa Gamma house at the University of North Carolina to steal the sorority’s ritual materials and a device used to decode them, and later breaks into the chapter at West Virginia University. A psychiatric panel reviewing his records years later would trace his problems to a “traumatic, damaging childhood.”
December 1980 — Ivins joins the U.S. Army Medical Research Institute of Infectious Diseases (USAMRIID) at Fort Detrick, Maryland, where he will work for nearly three decades as a senior anthrax-vaccine researcher. His employer never evaluates him for mental fitness during his career there.
1997 — Ivins creates and becomes the custodian of a large flask of liquid anthrax spores, designated RMR-1029.
2000 to 2001 — Ivins’s mental state deteriorates, documented in his own emails; in one from August 2000 he writes that he experiences “paranoid, delusional thoughts at times.” During this period the anthrax vaccine program to which he had devoted his career is in trouble, drawing criticism over potency and over alleged links to Gulf War Syndrome, and he fears it will be shut down.
The Attacks
September 18, 2001 — One week after the September 11 attacks, the first anthrax letters are postmarked. They are addressed to newsrooms: NBC, ABC, CBS, the New York Post, and American Media, a tabloid publisher in Florida. The letters are printed in block capitals with slogans built to read as jihadist: “Death to America,” “Allah is Great.”
October 5, 2001 — Robert Stevens, a photo editor in Florida, becomes the first to die. In all, the attacks cause 22 anthrax infections; five are fatal. The dead include two postal workers at the Brentwood facility in Washington, a hospital worker in New York, and a 94-year-old woman in Connecticut.
October 9, 2001 — A second batch of letters is postmarked, addressed to two United States senators, Tom Daschle and Patrick Leahy.
Mid-October 2001 — The anthrax from the Daschle letter is sent to USAMRIID for analysis. Ivins, one of the Army’s top anthrax experts, helps examine it, describing the material in his report as extremely pure and highly concentrated, not, in his words, “garage” spores.
The Attacks and the Case for War
The letters arrived in the rawest weeks after September 11, printed to read as foreign jihadist terror. The fear they produced did not stay confined to the criminal case. Over the next year and a half, the attacks were folded into the Bush administration’s argument for invading Iraq.
Late October 2001 — ABC News, citing four anonymous sources, reports that the Daschle anthrax contained bentonite, an additive it ties to Saddam Hussein’s bioweapons program, noting that as far as was known only Iraq had used it. The claim is the network’s lead story for five straight days. White House press secretary Ari Fleischer later says he had explicitly told ABC the report was wrong before it aired, and the network broadcast it anyway. The finding is false. No bentonite is present, ABC eventually corrects the story, and the sources are never identified.
A word on anonymous sources, here and always: when a claim rests on unnamed officials, two questions go unanswered that the reader should never stop asking — what does the source actually know, and why is he talking? A leak is a choice, and the choice serves someone. The bentonite story was false, traceable to no one, and it pointed at Iraq precisely when the case for war was being assembled. That the leak was deliberate cannot be proven. But it is fair to ask who gains when an unattributable, unverifiable, and false story leads a national newscast for five days, and whether the people who supplied it likely already knew it was false when they did.
January 30, 2003 — Deputy Secretary of State Richard Armitage tells the Senate Foreign Relations Committee that a single letter holding one teaspoon of anthrax had thrown the body into chaos in 2001 and killed two postal workers, then states that Iraq was believed to hold some 25,000 liters of anthrax, more than five million teaspoons, unaccounted for.
February 5, 2003 — Making the administration’s case for war at the UN Security Council, Secretary of State Colin Powell holds up a vial of simulated anthrax and reminds the chamber that a teaspoon of dry anthrax in an envelope had, in his words, “shut down the United States Senate in the fall of 2001.”
No link between the 2001 attacks and Iraq was ever established. The FBI’s eventual conclusion was that the anthrax had come from a flask in a U.S. Army laboratory in Maryland, and that the man responsible was an American government scientist.
The Investigation
2002 — Attorney General John Ashcroft publicly calls former Army scientist Steven Hatfill a “person of interest.” Hatfill is placed under extended surveillance and named repeatedly in press leaks. The same year, asked to submit a sample of his RMR-1029 flask to the FBI’s genetic repository, Ivins turns in one missing the genetic markers the flask carried (the same markers that linked it to the attack anthrax), which the bureau later characterizes as an attempt to mislead investigators. The investigation, opened after the 2001 attacks and codenamed Amerithrax, would become the largest in the bureau’s history: roughly 25 to 30 full-time investigators, more than 10,000 interviews, over 6,000 pieces of evidence, 5,750 grand jury subpoenas, and 5,730 environmental samples from 60 sites.
2005 — Investigators narrow the genetic trail to RMR-1029. Analyzing 947 samples, they find eight that carry the same four-mutation signature as the attack anthrax, all traceable to that flask. They interview Ivins, its custodian, as one of the people with access. An investigator also notes that the Princeton, New Jersey, mailbox the letters were dropped in, nearly 200 miles from Ivins’s Maryland lab, sits beside the local chapter of Kappa Kappa Gamma; to the bureau, his decades-long fixation on the sorority helps explain why the letters were mailed from so far away. The same year, investigators conclude Hatfill could not have had access to the flask at all.
2006 to 2007 — Ivins becomes the central suspect. As scrutiny intensifies, he is treated for depression, behaves erratically, and is stripped of access to sensitive areas at the lab.
The End
June 2008 — The government settles Hatfill’s lawsuit for 5.82 million dollars and issues a statement clearing him of involvement. No motive had ever been established against him.
July 9, 2008 — At a group therapy session, Ivins describes a plan to harm coworkers, according to his counselor, Jean Duley. The next day she has him committed and contacts the police.
July 24, 2008 — Duley testifies at a Maryland hearing in seeking a protective order, telling the judge that Ivins had obtained a gun and a bulletproof vest, intended to “go out in a blaze of glory,” and had been characterized by psychiatrists as a “sociopathic, homicidal killer.” The New York Times obtains and posts the audiotape, and it is widely broadcast.
July 29, 2008 — As the Justice Department prepares to seek an indictment, Ivins dies of an overdose of acetaminophen. He is 62. He has never been charged, and he never stands trial. His attorney maintains his innocence and attributes his death to the pressure of the investigation.
August 6, 2008 — At a Justice Department news conference, officials announce their conclusion that Ivins was responsible for the attacks.
Closure and Review
February 19, 2010 — The FBI issues its Amerithrax Investigative Summary, concluding that Bruce Ivins carried out the 2001 anthrax attacks and acted alone, and formally closes the case. The bureau’s theory of motive is that the failing vaccine program had put Ivins under severe professional and psychological strain, and that the attacks would revive urgency and funding for anthrax-vaccine work, including a newer vaccine he had helped invent. As for why Daschle and Leahy, officials offer two theories: that Ivins saw them as obstructing research funding, or as lapsed Catholics over their abortion-rights votes. His attorney rejects the second.
February 2011 — A National Research Council panel, convened at the FBI’s request, releases a 190-page report finding that the genetic evidence is consistent with the bureau’s conclusion but does not, by itself, definitively prove the attack anthrax came from RMR-1029. The same panel finds no evidence the anthrax was chemically weaponized with a silicon additive.
March 2011 — An Expert Behavioral Analysis Panel reviewing Ivins’s psychiatric records concludes he had severe, diagnosable mental illness and a profile that should have disqualified him from a security clearance and from access to pathogens.
2015 — The Government Accountability Office reviews the FBI’s genetic analysis and recommends improvements to its methods. Neither this review nor the 2011 panel identifies another suspect, and neither clears Ivins.
Today
June 11, 2026 — A malfunctioning sensor reports anthrax at the Pentagon, and part of the building is locked down before the alarm is found to be false.
The FBI investigated for nearly ten years, concluded that Bruce Ivins mailed the anthrax letters and acted alone, and closed the case. That is the government’s official and final conclusion, and it stands as the answer of record.
The attacks also reshaped American biodefense. Within two years the government launched BioWatch, a network of air sensors built to detect aerosolized anthrax and other pathogens across more than thirty cities, and committed nearly 6 billion dollars to Project BioShield for new vaccines and treatments. The detection equipment that emptied part of the Pentagon this morning descends from that buildout.
The attacks of 2001 were real, lethal, and never repeated. And a quarter-century later, the word anthrax alone is still enough to clear the Pentagon.