Decades after anthrax attacks, some still wonder if real killer is at large

The Brief

The FBI says government scientist Bruce Ivins acted alone in 2001 when he sent letters containing anthrax in the mail, killing five people and sickening 17 others.

Ivins killed himself in 2008 as the Justice Department was preparing to indict him for the largest biological attack in U.S. history.

Years later, some of the government’s own science consultants "wonder whether the real killer is still at large."

WASHINGTON - Months after the anthrax attacks of 2001, government scientist Bruce Ivins offered to help investigators trace the origins of the deadly powder that had spread through the mail, killing five people.

Years later, Ivins would be named as the sole suspect in the FBI’s investigation of "Amerithrax," the biggest biological attack in U.S. history.

Ivins, an Arm