Justice Department Preparing Grand Jury Subpoenas in John Brennan Investigation, Sources Say

Justice Department officials are preparing to issue multiple grand jury subpoenas as part of an ongoing investigation into former CIA Director John Brennan, according to sources familiar with the matter.

The investigation, which is being supervised by U.S. Attorney for the Southern District of Florida Jason Reding Quiñones, represents a significant escalation in scrutiny of former intelligence community leadership. Officials from the Justice Department in both Miami and Washington, D.C. are collaborating on the probe, though department sources declined to comment when contacted.

This development follows Fox News’ earlier reporting from July 2025 that both Brennan and former FBI Director James Comey were under investigation. While Comey’s case has already progressed to court proceedings with a trial scheduled for January, Brennan has not yet been indicted.

Sources indicate that evidence against Brennan will be presented to a grand jury in South Florida, though it remains unclear whether this will result in an indictment. The nature of the allegations against the former CIA chief has not been publicly disclosed.

Brennan, who led the CIA from 2013 to 2017 during the Obama administration, has been a controversial figure in recent years. After leaving government service, he became an outspoken critic of the previous administration, which led to his security clearance being revoked in 2018 – an unprecedented move against a former intelligence chief that sparked significant debate about the politicization of intelligence matters.

The investigation into former high-ranking intelligence officials represents a rare instance of Justice Department scrutiny targeting the leadership of America’s intelligence apparatus. Such investigations typically face significant hurdles due to national security considerations and classification issues surrounding the work of senior intelligence officials.

Legal experts note that prosecutions of former intelligence chiefs face unique challenges, as defense attorneys often argue that actions were taken in good faith as part of national security operations. Additionally, evidence in such cases frequently involves classified information, complicating public proceedings.

The timing of these investigations has raised questions in Washington, coming amid a period of intense political polarization and ongoing debates about the proper role and oversight of America’s intelligence community. Critics have expressed concern about potential political motivation behind the probes, while supporters argue that accountability should apply at all levels of government.

This investigation emerges against the backdrop of broader tensions between political leadership and the intelligence community that have characterized recent years in American politics. The relationship between elected officials and intelligence agencies has been strained by allegations of improper surveillance, questions about foreign interference in elections, and disagreements over intelligence assessments.

The case could have significant implications for how intelligence agencies operate, potentially affecting everything from internal oversight mechanisms to the willingness of officials to make difficult judgment calls in sensitive situations.

Neither Brennan nor his legal representatives have issued public statements regarding this latest development in the investigation. Former colleagues from the intelligence community have generally maintained silence on the matter, though some former officials have privately expressed concern about the precedent these investigations might set.

Justice Department officials have not provided a timeline for when the grand jury might conclude its work or when potential charges could be filed if the grand jury determines there is sufficient evidence to proceed.

As this remains a developing situation, further details about the nature of the investigation and potential charges are expected to emerge in the coming weeks.