‘Unabomber’ Ted Kaczynski dies in prison

Years before the September 11 attacks, the Unabomber’s deadly homemade bombs changed the way Americans posted packages and boarded airplanes, even virtually shutting down air travel on the west coast in July 1995

Ted Kaczynski has died in federal prison (John Youngbear/AP)

Theodore “Ted” Kaczynski, the Harvard-educated mathematician who retreated to a dingy shack in the Montana wilderness and ran a 17-year bombing campaign that killed three people and injured 23 others, has died aged 81.

Branded the “Unabomber” by the FBI, Kaczynski died at the federal prison medical centre in Butner, North Carolina, Kristie Breshears, spokeswoman for the federal Bureau of Prisons, told The Associated Press.