'Unabomber' Ted Kaczynski dies in prison. Ex-FBI official describes how he was caught

Theodore “Ted” Kaczynski, the man known as the “Unabomber,” has died, according to a law enforcement official. He was 81.
Kaczynski was found unresponsive in his cell at the Federal Medical Center in Butner, North Carolina, around 12:25 a.m., Saturday morning, the Federal Bureau of Prisons said.
Kaczynski had been serving eight life sentences after he pleaded guilty in 1998 for sending bombs that killed three people and wounded 23 others through the mail from 1978 to 1995.