And the victims, investigators later learned, were chosen randomly from library research. These efforts proved of little use in identifying the bomber, who took pains to leave no forensic evidence, building his bombs essentially from “scrap” materials available almost anywhere. In search of clues, the team made every possible forensic examination of recovered bomb components and studied the lives of victims in minute detail.

The task force would grow to more than 150 full-time investigators, analysts, and others. Postal Inspection Service was formed to investigate the “UNABOM” case, code-named for the UNiversity and Airline BOMbing targets involved. In 1979, an FBI-led task force that included the ATF and U.S.

Along the way, he sowed fear and panic, even threatening to blow up airliners in flight. Over the next 17 years, he mailed or hand delivered a series of increasingly sophisticated bombs that killed three Americans and injured nearly two dozen more. The man that the world would eventually know as Theodore Kaczynski came to our attention in 1978 with the explosion of his first, primitive homemade bomb at a Chicago university.

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