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04/15/2013 01:25 pm ET Updated Apr 16, 2013

Kevin Harris Blows Himself Up, Other Explosives Found In Foil-Wrapped House (VIDEO, UPDATE)

Hazmat, bomb squad crews and FBI agents were searching a home Monday in Costa Mesa, Calif. after a man blew himself up in his front yard Sunday.

After finding two pipe bombs near his body -- one detonated, one intact -- the authorities searched the house and found three more pipe bombs, KTLA reports.

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At least 16 neighbors in the quiet Orange County neighborhood were evacuated as a precaution until authorities detonated all the explosives.

Neighbors said that shortly before the blast, the 52-year-old man was lying on his front lawn. An ambulance was called, but the man refused to go to the hospital and went back inside, Patch reports.

About 90 minutes later, neighbors heard the explosive and called the police. It is not clear if the man committed suicide or accidentally detonated the bomb, the AP reports.

Neighbors say officers have been called to the home before, according to ABC.

They also said the man disliked the government and law enforcement, which may be why the FBI were on the scene, NBC reports.

UPDATE: The deceased man, identified as Kevin Harris, was known to record video of his neighbors and to tape notes onto a tree in his yard, neighbors told the Los Angeles Times. One note read, “For your information: My introspection and my adversaries behavior have convinced me that electronic mind reading is now reality.”

The note points to a rambling, 17,000-word essay by Harris titled “The Pricker: A True Story of Assassination, Terrorism And High Treaso.” It includes references to aliens, the O.J. Simpson trial, the U.S. government and “the pricker,” which the author describes as “an assassin’s weapon that deposits biological agents into a victim’s skin, on contact, without their knowledge.”

The neighbors said they made a point to walk quickly past his house, which was wrapped in foil, the Times reports.

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