In the draft of his book, Buma described himself as “the most significant whistleblower in FBI history.”
Federal prosecutors in California, where Buma had worked as a counterintelligence and counterproliferation agent, charged him on Tuesday with a single count of disclosure of confidential information. The charge is punishable by up to one year in prison.
Buma submitted a letter of resignation Sunday, according to an affidavit prepared by an FBI agent involved in the investigation. The probe into Buma's conduct began well before Trump took office for his second term. The FBI searched Buma's home in November 2023, when Biden was in office.
Messages seeking comment were left with Buma's lawyer.
After filing a whistleblower complaint and testifying before Congress, the court affidavit said Buma went to his FBI office in Orange County, California, in October 2023 and printed copies of about 130 confidential files. The files included summaries of information provided by confidential informants, the identity of an informant and screenshots of text messages he exchanged with an informant, the affidavit said.
Some of that information also appeared in a draft of Buma's book, the affidavit said.
After emailing his bosses that he was taking an unpaid leave of absence, Buma posted excerpts of the draft on social media and emailed copies to various people, some of whom were helping him negotiate a publishing deal, according to the affidavit. Among other things, the book contained information about an FBI investigation into a foreign country’s weapons of mass destruction program, the affidavit said.
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This story replaces a previous version that erroneously described the charge Buma faces.