Prosecutors say a Northern California man has pleaded guilty to making death threats against Sen. Barbara Boxer.

Marin County Deputy District Attorney Aicha Mievis tells the Marin Independent Journal ( http://bit.ly/v5Ky6a) that 47-year-old Kevin Joseph O'Connell entered the plea on Monday to a charge of threatening a public official. The charge was reduced to a misdemeanor in exchange for the plea.

Authorities say O'Connell threatened Boxer in a voicemail he left at her San Francisco office in July. He allegedly claimed he was being harassed by authorities and was in a dispute with his neighbors.

San Rafael police have said the death threat wasn't related to Boxer's political positions.

O'Connell's lawyer, Deputy Public Defender Bonnie Marmor, described the call as a cry for help.

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Information from: Marin Independent Journal, http://www.marinij.com