FBI agents arrested Kaczynski on April 3, 1996, at his remote cabin outside Lincoln, Montana, where he was found in an unkempt state. A search of his cabin revealed a wealth of bomb components, 40,000 handwritten journal pages that included bomb-making experiments and descriptions of the Unabomber crimes; and one live bomb, ready for mailing.
The search for what the FBI termed UNABOM became one of the most expensive investigations in the agency's history, with nearly 200 staffers involved. Oddly, it wasn't until his sister-in-law and his brother David came to recognize similarities in the writing style of the mad bomber that Ted was eventually unmasked. At trial, his lawyers wanted to plead insanity; that approach was rejected by the defendant, who didn't consider himself to be insane. Instead, he opted for a straight guilty plea in exchange for life in prison with no parole. He was housed in SUPERMAX.