Ted Kaczynski was a domestic terrorist who carried out a series of bombings from 1978 to 1995

Kaczynski targeted universities, homes, and other locations, killing three people and injuring 23 others

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The FBI launched an investigation into the bombings in 1979, dubbing it the "UNABOM" case

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In 1995, Kaczynski's writings were published in full after consultation with the FBI

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The writings criticized industrialization, blaming it for psychological suffering and environmental damage

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David Kaczynski, Ted's brother, approached the authorities after the publication of the writings

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Ted Kaczynski was arrested in his Montana shack, where authorities discovered 40,000 handwritten

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In January 1998, Kaczynski pleaded guilty and received four life sentences plus 30 years in prison

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Due to poor health, he was transferred to a federal medical center in Butner, N.C., in 2021

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Ted Kaczynski, known as the Unabomber, died by suicide on Saturday

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