Capture: He was arrested in 1996 after his brother recognized his writing style in the published manifesto and tipped off the FBI.
Trial and Sentencing: In 1998, Kaczynski pleaded guilty to all charges and was sentenced to life in prison without the possibility of parole.
The Unabomber case was one of the longest and most expensive investigations in FBI history, and it significantly impacted discussions about technology, society, and domestic terrorism in the United States.