SAN RAFAEL (CBS/AP) – A San Rafael man is set to be arraigned on charges that he made death threats against Sen. Barbara Boxer.

Marin County prosecutors said 47-year-old Kevin Joseph O’Connell appear in court on Tuesday, a day after he was charged.

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O’Connell allegedly threatened Boxer in a voicemail he left at her San Francisco office last week. He was arrested on Saturday.

Investigators have said O’Connell claimed in the message he was being harassed by authorities and was in a dispute with his neighbors.

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San Rafael police Det. Scott Eberle said the death threat was not related to Boxer’s political positions.

O’Connell’s attorney, Deputy Public Defender Bonnie Marmor, said her client suffers from a condition although she did not specify what that condition was. She said he had no intention of acting on the threat.

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