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Justice Department officials in Miami and Washington, D.C., are actively preparing to issue several grand jury subpoenas relating to an investigation into former CIA Director John Brennan, Fox News has learned.

U.S. Attorney for the Southern District of Florida Jason Reding Quiñones is supervising the probe, Fox News is told.

Fox News reached out to the Justice Department, but sources there declined to comment. 

COMEY INDICTED FOR ALLEGED FALSE STATEMENT, OBSTRUCTION OF CONGRESSIONAL PROCEEDING

Former CIA director John Brennan

Former CIA Director John Brennan speaks during a forum on election security titled, "2020 Vision: Intelligence and the U.S. Presidential Election" at the National Press Club in Washington, D.C., October 30, 2019. (REUTERS/Joshua Roberts)

Fox News first reported that Brennan and former FBI Director James Comey were under investigation as of early July 2025. Thursday's development intensifies that investigation. Comey is fighting his case in court with a trial set for January.

Brennan has not been indicted, and it’s unclear if a grand jury would indict him, but evidence will be presented in South Florida. 

James Comey and John Brennan composite photo

Fox News reported as early as July 2025 that former FBI Director James Comey and former CIA Director John Brennan were under investigation. (Mark Reinstein/Corbis via Getty Images; Chip Somodevilla/Getty Images)

HOUSE JUDICIARY COMMITTEE REFERS FORMER CIA DIRECTOR JOHN BRENNAN TO JUSTICE DEPARTMENT FOR PROSECUTION

Last month, House Judiciary Committee Chairman Jim Jordan, R-Ohio, referred Brennan to the DOJ, saying that the former CIA chief "willfully and intentionally" made false statements to Congress. 

Jordan accused Brennan of lying in his 2023 Judiciary Committee testimony by denying that the CIA used the Steele dossier in prepping the 2017 Intelligence Community Assessment (ICA) on Russian election interference, and falsely claiming the CIA opposed including the dossier.

Jim Jordan sits in a hearing

Rep. Jim Jordan, R-Ohio, looks on during a hearing with the House Judiciary Committee in the Rayburn House Office Building on Sept. 3, 2025 in Washington, D.C. (Kevin Dietsch/Getty Images)

The Steele dossier was a series of reports detailing President Donald Trump’s alleged ties to Russia. It was compiled and delivered to the FBI in 2016 by former British intelligence agent Christopher Steele.

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This is a developing story. Please check back for updates.