Ted Kaczynski, better known as the Unabomber, has been found dead in his prison cell, federal officials confirmed to the BBC.
Kaczynski, 81, killed three people and injured 23 more during a mass mail-bombing spree between 1978 and 1995. He later pleaded guilty to his crimes.
He was sentenced to life without parole in 1996 after evading capture for almost 20 years.
An insane terrorist but a very intelligent man and a maths prodigy at 12.
