Anders Behring Breivik, the Norwegian suspect who is believed to have killed more than 90 people in a deadly array of terrorist attacks on Friday, also composed a 1500-page online manifesto detailing his extreme right-wing views and plans for mass murder.

However, it appears that much of his written screed was plagiarized from the documents penned by U.S. anarchist Theodore Kaczynski, the so-called “Unabomber.”

Kaczynski killed three people and wounded 29 others by sending parcel bombs in the 1980s and 1990s. He was jailed for life in 1998 and has no hope for parole.

According to a report in the UK newspaper Daily Telegraph, Breivik “copied and pasted” about a dozen prominent passages from Kaczynski’s document – although he appeared to have substituted certain words like “leftist” with “cultural Marxist”.

The plagiarism was discovered by Norwegian bloggers.

Ragnhild Bjørnebek, a researcher for the Norwegian Police Academy, told Norwegian media that the link between the Unabomber and Breivik was “very interesting” and revealed certain similarities between the two men.

“The Unabomber was very intelligent and who was also a person that was very difficult to detect,” she told reporters.

However, the two terrorists had somewhat different agendas. Kaczynski; generally railed against the advances in modern science and technology, where as Breivik appeared to be focused more on building a Western Christian force to resist what he perceived as Islamic domination of the west.