Kaczynski, 81, was found dead in his cell around 12.30pm on Saturday morning.
The convicted assassin, who was serving eight consecutive life sentences, was transported by ambulance to a hospital, where he was pronounced dead. Attempts to revive him at the facility and in the ambulance were unsuccessful.
Kaczynski’s cause of death was not immediately disclosed, but three prison officials familiar with the situation told the New York Times that he died by suicide.
The Federal Bureau of Prisons has not yet officially confirmed Kaczynski’s official cause of death. They will wait for an official autopsy to be performed by the Chief Medical Examiner’s office in North Carolina.
Kaczynski was housed at the Federal Medical Center in Butner, North Carolina, where he was being treated for late-stage cancer.
He was transferred to the facility in December 2021. He previously served more than 25 years of his sentence at ADX Florence, the maximum-security federal penitentiary in Colorado that also houses notorious criminals including drug lord Joaquin “El Chapo” Guzman and the Tsarnaev brothers. responsible for the Boston Marathon bombing.
Kaczynski was a Harvard-educated mathematician and professor at the University of California, Berkeley. Although he was on a permanent job, he quit his job in 1969 without giving a reason.
He then moved to a remote cabin in Lincoln, Montana, where years later he conducted a nationwide bombing campaign targeting academics, computer store owners, a lumber industry lobbyist, and the president of United Airlines.
The 17-year search for the “Unabomber” became the longest and most costly search in FBI history before he was finally caught in 1996.
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