'Unabomber' Ted Kaczynski - who carried out a 17-year bombing campaign that killed three people and injured 23 others, died by suicide, sources have told The Associated Press.
The 81-year-old, who was suffering from late-stage cancer, was found unresponsive in his cell at the federal prison medical centre in Butner, North Carolina, at around 12.30am on Saturday.
The Harvard-educated mathematician has been locked up since May 1998, when he was sentenced to four life sentences, plus 30 years for the campaign of terror that set universities nationwide on edge.
Ted Kaczynski: https://en.wikipedia.org/wiki/Ted_Kaczynski