NY1 VIDEO: Just weeks after the September 11th attacks the city and the nation were facing a new threat. On October 12, 2001, New Yorkers learned that the city had a confirmed case of anthrax. As we take a look back at 20 years of NY1, the station revisits Andrew Siff's report on the investigation.

NY1 FOLLOW-UP Seventeen people nationwide would contract anthrax before the mailings stopped. Five people died, among them a New York City woman. The FBI investigation centered around a government researched named Dr. Bruce Ivins. He denied the allegations and committed suicide in 2008 before he was indicted. The FBI formally closed its investigation into the mailings in 2010.