
The Unabomber, also known as Theodore Ted Kaczynski, was arrested on April 3, 1996, at his remote cabin in Lincoln, Montana. The name Unabomber was derived from the early targets of his attacks, which included universities and airlines. The Unabomber's 17-year campaign of terror involved planting bombs that killed three people and injured many more. The investigation into his crimes was one of the longest and most expensive in FBI history.
| Characteristics | Values |
|---|---|
| Date of Arrest | April 3, 1996 |
| Location of Arrest | Cabin near Lincoln, Montana |
| Arresting Agency | FBI |
| Arrestee | Theodore John Kaczynski (also known as Ted Kaczynski) |
| Arrestee Alias | Unabomber |
| Arrestee Occupation | Mathematician |
| Duration of Crime Spree | 16-20 years |
| Modus Operandi | Planting bombs |
| Victims | 3 dead, 23 injured |
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What You'll Learn
- Theodore John Kaczynski, also known as the Unabomber, was arrested on April 3, 1996
- The FBI dubbed him the Unabomber because he targeted universities and airlines
- The Unabomber sent a 35,000-word essay to the FBI, which was published in the hopes that someone would identify him
- The Unabomber's brother, David, recognised his writing style and notified the FBI
- The Unabomber was arrested at his small cabin in Lincoln, Montana

Theodore John Kaczynski, also known as the Unabomber, was arrested on April 3, 1996
On April 3, 1996, Theodore John Kaczynski, also known as the Unabomber, was arrested at his small cabin in the woods near Lincoln, Montana. The arrest ended a 17-year terror campaign that involved 16 mail bombs, killing three people and injuring 23.
Kaczynski, an American mathematician and domestic terrorist, had been living without electricity in a remote cabin in the wilderness. Neighbours were surprised by the arrest, describing him as a quiet and intelligent man.
The FBI was able to trace Kaczynski's motives and meticulous bomb construction, zeroing in on him and his bomb-making campaign against universities and airlines. His early targets included universities and airlines, leading investigators to call their suspect the "Unabomber", an acronym for "university", "airline", and "bomber".
Kaczynski's arrest was the result of a multi-year, multi-agency investigation involving postal inspectors and agents from the FBI and ATF. At the scene of the arrest, investigators found a wealth of bomb components, 40,000 handwritten journal pages that included bomb-making experiments, and one live bomb ready for mailing.
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The FBI dubbed him the Unabomber because he targeted universities and airlines
The Unabomber, also known as Theodore "Ted" Kaczynski, was a domestic terrorist who mailed bombs over a period of 17 to 18 years, killing three people and injuring many more. He was finally arrested in 1996, at his cabin in Montana, where investigators found a live bomb, bomb-making components, and an original copy of the "Unabomber Manifesto".
Kaczynski's first known attack was in 1978, when a passerby found a package addressed and stamped in a parking lot at the University of Illinois, Chicago Circle Campus. In 1979, he struck again at Northwestern University, injuring a student. Later that year, his third bomb exploded on an American Airlines flight, causing injuries from smoke inhalation. In 1980, a bomb mailed to the home of Percy Wood, the president of United Airlines, injured Wood when he tried to open it.
Kaczynski's attacks were frightening and unpredictable, and he left a cold trail of terrorism across the country. His early targeting of universities and airlines led federal investigators to call him the Unabomber.
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The Unabomber sent a 35,000-word essay to the FBI, which was published in the hopes that someone would identify him
The Unabomber, also known as Theodore "Ted" Kaczynski, was a domestic terrorist who mailed bombs over a period of 17 years, killing three people and injuring many more. He was finally arrested in 1996, but before his arrest, he sent a 35,000-word essay to the FBI, which was published in The Washington Post in the hopes that someone would identify him.
Kaczynski was a mathematics prodigy who abandoned his academic career in 1969. He became known as the "Unabomber" because his early targets were universities and airlines. The FBI used the case identifier "UNABOM" before his identity was known, which led to the media naming him the "Unabomber". His attacks were frightening and unpredictable, and he left little forensic evidence, making him the target of one of the longest and most expensive FBI investigations in history.
In 1995, Kaczynski mailed letters to media outlets, including The New York Times, outlining his goals and demanding that a major newspaper publish his 35,000-word essay, "Industrial Society and Its Future", which the FBI dubbed the "Unabomber manifesto". He stated that he would “desist from terrorism" if his demands were met. There was controversy over whether the essay should be published, but FBI Director Louis Freeh and Attorney General Janet Reno recommended its publication, citing concerns for public safety and the hope that someone would identify the author.
After the manifesto was published, the FBI received thousands of tips, but one stood out: David Kaczynski, Ted's brother, described his troubled brother, who had grown up in Chicago and lived in several places, including Salt Lake City and Lincoln, Montana. David provided letters and documents written by his brother, which helped lead to Ted Kaczynski's arrest.
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The Unabomber's brother, David, recognised his writing style and notified the FBI
The Unabomber, also known as Theodore "Ted" Kaczynski, was arrested on April 3, 1996, at his cabin in Lincoln, Montana. He was a domestic terrorist who had planted bombs that killed three people and injured 23 others during a 17-year period.
Before his arrest, the FBI had been trying to capture the Unabomber for 17 years, making it one of the longest and most expensive investigations in FBI history. The Unabomber's targets were universities and airlines, leading investigators to call him the "Unabomber," an acronym for "university," "airline," and "bomber."
In 1995, the Unabomber demanded the publication of what became known as the "Unabomber Manifesto" in exchange for an end to the violence. The New York Times and Washington Post published the manifesto, a diatribe against technological advancement, on September 19, 1995.
The Unabomber's brother, David Kaczynski, recognized his brother's writing style and ideas in the manifesto. David's wife had initially encouraged him to consider the possibility that his brother was the Unabomber, but he was dismissive. However, after reading the manifesto, David took the likelihood more seriously and notified the FBI in February 1996.
On April 3, 1996, the FBI arrested Ted Kaczynski and found extensive evidence at his cabin, including a live bomb and an original copy of the manifesto.
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The Unabomber was arrested at his small cabin in Lincoln, Montana
The Unabomber, also known as Theodore "Ted" Kaczynski, was arrested on April 3, 1996, at his small cabin in Lincoln, Montana, marking the end of one of the FBI's longest and most expensive investigations.
Kaczynski, an American mathematician and domestic terrorist, had been living in a small, remote cabin without electricity in the Montana wilderness. Neighbours were surprised by his arrest, describing him as a quiet, intelligent man. However, Kaczynski had been responsible for a 17-year terror campaign, sending mail bombs that killed three people and injured 23 others.
The FBI dubbed him the "Unabomber" because his targets included universities and airlines. During the investigation, the FBI created the UNABOM task force, a combination of the words "university" and "airline bomber", from which the media derived the name "Unabomber".
Kaczynski's arrest was made possible by his brother, David, who recognised his writing style in the "Unabomber Manifesto", a 35,000-word essay that the Unabomber demanded be published in exchange for ending his violent campaign. After reading the manifesto, David notified the FBI of his suspicions in February 1996.
Upon arresting Kaczynski and searching his cabin, investigators found extensive evidence, including bomb components, a live bomb, and an original copy of the manifesto. They also discovered 40,000 handwritten journal pages that included descriptions of Unabomber crimes and bomb-making experiments.
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Frequently asked questions
The Unabomber is the name given to Theodore John Kaczynski, an American mathematician and domestic terrorist.
The Unabomber targeted universities and airlines. Federal investigators began calling their suspect the Unabomber, an acronym for university, airline, and bomber.
No, the Unabomber was arrested at his remote cabin in Montana.
The Unabomber was arrested on April 3, 1996.
The FBI was able to trace Kaczynski's motives and his meticulous bomb construction, which helped them zero in on him and his bomb-making campaign.




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