The mailings began on September 18, 2001, targeting major media outlets and, later, two U.S. Senators. The letters contained fine, brownish powder laced with and included cryptic messages like "DEATH TO AMERICA".
: Congress passed the USA PATRIOT Act and the Public Health Security and Bioterrorism Preparedness and Response Act of 2002 to tighten control over biological agents. The Anthrax Attacks: In the Shadow of 9/11
: A hospital worker in the Bronx whose source of exposure remains a mystery. The mailings began on September 18, 2001, targeting
For nearly a decade, the FBI pursued leads across six continents, conducting over and issuing more than 6,000 subpoenas . The mailings began on September 18