Incident Summary:

10/15/2001: In one of several anthrax-related incidents, the office of Senator Tom Daschle was the target of an anthrax attack, in which twenty-eight people were exposed. The letter containing anthrax was postmarked in Trenton, New Jersey, U.S.A. on October 9th, and was opened on October 15th. Two Washington area postal workers later died on October 21st and October 23rd from anthrax that appeared to be connected to the Daschle letter. No group claimed responsibility for the attacks. Concluding an extensive investigation, the Federal Bureau of Investigation identified microbiologist Dr. Bruce Ivins as the sole perpetrator. However, Ivins committed suicide in 2008, having not been arrested or prosecuted. An independent review of the scientific evidence by the National Academy of Science indicated that it was essentially inconclusive.



United States

North America

region/u.s. state:

District of Columbia


Attack Information
Type of Attack (more) Unarmed Assault
Successful Attack? (more) Yes
Target Information (more)
Target Type: Government (General)
Name of Entity United States Senate
Specific Description Senator Tom Daschle's office
Nationality of Target United States
Additional Information
Hostages No
Ransom No
Property Damage No
Weapon Information
Type Sub-type
Weapon Details
Anthrax (Bacillus anthracis) was mailed to the office of Senator Tom Daschle.
Additional Information
Suicide Attack?No
Part of Multiple Incident?Yes
Criterion 1 (more) Yes
Criterion 2 (more) Yes
Criterion 3 (more) Yes
Doubt Terrorism Proper (more) No
Perpetrator Group Information
Group Name Claimed Responsibility
Unknown (suspected) No
Perpetrator Statistics
Number of Perpetrators Unknown
Number of Captured Perpetrators 0
Casualty Information
Total Number of Casualties 2 Fatalities / 6 Injured
Total Number of Fatalities 2
Number of U.S. Fatalities 2
Number of Perpetrator Fatalities 0
Total Number of Injured 6
Number of U.S. Injured 6
Number of Perpetrators Injured 0
“Timeline of anthrax outbreak,” The Associated Press, October 31, 2001.
“Wing of Senate office building closed; authorities see link with anthrax letter sent to NBC,” The Associated Press, October 16, 2001.
“Anthrax Hits 3 in Capital,” Chicago Sun Times, October 17, 2001.