The Unabomber Case and Ted Kaczynski

A long-running bombing investigation

The FBI's UNABOM investigation began after a series of bomb incidents linked initially to university and airline targets. From 1978 through 1995, investigators faced devices designed to provide very little traceable evidence. A joint task force involving the FBI, ATF and U.S. Postal Inspection Service eventually grew into one of the bureau's most extensive manhunts.

Three people were killed during the campaign: computer-store owner Hugh Scrutton in Sacramento in 1985, advertising executive Thomas Mosser in New Jersey in 1994, and California Forestry Association president Gilbert Murray in Sacramento in 1995. Other victims survived bombings and were left with serious injuries.

The manifesto and linguistic evidence

In the 1990s, the bomber sent writings and threats to media organizations. After a lengthy debate, major newspapers published a manifesto at the request of federal authorities in hopes that someone would recognize its language and ideas.

David Kaczynski became concerned that the writing resembled that of his brother Theodore “Ted” Kaczynski. Information supplied through David's attorney reached the FBI. Investigators compared earlier writings with the manifesto and concluded that the same author was highly likely. That linguistic analysis, combined with details from the bombing investigation and Kaczynski's life, supported the application for a search warrant.

Arrest in Montana

On April 3, 1996, federal agents arrested Kaczynski at his cabin near Lincoln, Montana. The FBI says the search recovered extensive documentary and physical evidence, including thousands of handwritten pages describing experiments and Unabomber crimes, bomb components and a live device.

The discovery gave prosecutors direct evidentiary links that the earlier investigation had struggled to establish. Federal indictments in California and New Jersey charged Kaczynski in connection with fatal and nonfatal bombings.

The guilty plea

On January 22, 1998, Kaczynski entered a guilty plea resolving the federal cases after the government agreed to withdraw its notices seeking the death penalty. The plea covered charges tied to the fatal bombings and other attacks.

On May 4, 1998, he was sentenced to four consecutive life terms plus 30 years. A later federal appellate decision records the plea, the sentence and restitution ordered for victims. Kaczynski subsequently challenged the validity of his guilty plea and issues surrounding self-representation, but the convictions were not undone.

Death in federal custody

Kaczynski remained in federal custody for the rest of his life. He was eventually transferred from the federal supermax prison in Colorado to the Federal Medical Center in Butner, North Carolina. He died there on June 10, 2023, at age 81.

His death did not create any unresolved criminal-status question about the prosecuted Unabomber case: his guilt had been formally admitted and the federal convictions and sentences remained in place.

Current status

This case is classified as Solved / Adjudicated. Ted Kaczynski pleaded guilty in 1998 to federal charges arising from the bombing campaign and received multiple life sentences. The deaths of Hugh Scrutton, Thomas Mosser and Gilbert Murray are treated as part of the same continuous Unabomber investigation rather than as three separate pages created merely to increase case count.