FBI raids office, homes of Contra Costa Co. tax assessors as part of ongoing investigation

MARTINEZ, Calif. (KGO) -- The FBI served three federal search warrants Tuesday morning at the Contra Costa County Assessor's office, as well as two residences, including that of the outgoing assessor, as part of an ongoing investigation.

Outgoing County Assessor Gus Kramer's home on West Arlington Street in Martinez was searched by the FBI, as well as a residence on Temple Drive in Pacheco.

Agents left the assessor's office around 1:30 p.m., but the office remained closed for much of the day. Kramer said he has not been told the specific reason for the investigation and maintains his innocence.

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"I think this is a fishing expedition, based on rumor and inuendo," Kramer said. "It's drama and trauma. Totally uncalled for."

The FBI also searched the home of Assistant Assessor Vince Rob, who was recently elected to replace Kramer. Kramer is retiring and did not seek re-election.

The FBI declined an interview request. A partial warrant confirms the searches at the three locations, though Kramer said the details provided were limited and suggested the possibility of wire fraud.

"Vaguely, very vaguely," Kramer said when asked whether the warrant explained the nature of the investigation. "(I am) highly suspect it's the two employees."

Kramer said he believes the investigation may stem from complaints by former employees or possibly political tensions involving the Contra Costa County Board of Supervisors.

"I recently - successfully! - was the only person who successfully prosecuted the Board of Supervisors for violating the Brown Act. Not once, not twice, but five times in one day," Kramer said.

Members of the Board of Supervisors declined to comment on an ongoing investigation. All five board members had endorsed Kramer's opponent in the 2022 election and publicly censured Kramer in 2019.

In 2019, Kramer was the subject of a civil grand jury accusation of "willful or corrupt misconduct" for creating a hostile and abusive work environment after female employees reported unwanted sexual remarks and racial disparagement. The case ultimately resulted in a mistrial.

"I have been investigated more times than not. And every time, I am exonerated. Every! Time!" Kramer said. "My problem is, I have been here 32 years. I know more, I know too much! They would really like me to go away."

Kramer said he does not know what items were taken from his office and that agents removed one document from his home. He remains in his position but said he is unsure when the assessor's office will reopen.

One supervisor said the county is considering legal options to protect the assessment process. Because Kramer is an elected official, he cannot be placed on paid leave.

The investigation remains ongoing.

Bay City News contributed to this article.