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

Marin County prosecutors say 47-year-old Kevin Joseph O’Connell will 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.

In an exclusive interview with CBS Sacramento, Sen. Barbara Boxer responded to the alleged death threats against her:

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“Well, frankly, I’m not allowed to speak much about this. I just want to commend the Capitol Police and the local police in San Rafael and the FBI for doing everything they did to try and protect not only me but the members of my staff and my family and I thank them for that,” Sen. Boxer told CBS Sacramento.

Investigators tell the Marin Independent Journal O’Connell claimed in the message he was being harassed by authorities and was in a dispute with his neighbors.

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

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