LA PALMA ( — Authorities Friday retrieved evidence from the Orange County home of triple murder suspect Christopher Dorner’s mother.

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Irvine police and U.S. Marshals, as well as a number of other law enforcement agencies, conducted a 4-hour search of the La Palma residence in the 4900 block of Sharon Drive, which is owned by 62-year-old Nancy Dorner.

Several paper grocery bags of evidence were taken out of the structure, according to Lt. Bill Whalen of the Irvine Police Department.

CBS2’s Michele Gile said the FBI and members of the Orange County Regional Computer Forensics Laboratory seized computer-related technology.

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“(We) did a very thorough search of the residence,” said Whalen.

Officials believe Dorner recently lived at the home.

A neighbor told Gile that the 33-year-old fugitive was “friendly” when she spoke to him last week as he was moving camouflage bags in and out of his truck.

Dorner, an ex-Los Angeles Police Department officer, is accused of killing a Riverside officer Thursday and murdering a retired LAPD captain’s daughter and her fiancé in Irvine Feb. 3.

He also allegedly wounded two officers.

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Police believe the killings are part of a revenge plot in connection to Dorner’s termination from the LAPD.