# DOJ investigation into John Brennan

> Live situation record from CLSTR: https://clstr.news/situations/doj-investigation-into-john-brennan
> Updated: 2026-09-24T20:27:31.000Z. Sources: 22. Developments: 3.

Former CIA Director John Brennan has been subpoenaed to testify before a federal grand jury in Fort Pierce, Florida, on October 15, 2026. The subpoena is part of a Department of Justice conspiracy investigation into whether former intelligence and law enforcement officials conspired to deprive Donald Trump of his civil rights through various actions over the last decade.

The probe reportedly encompasses matters related to the 2016 investigation into Russian interference in the presidential election and the 2022 FBI search of the Mar-a-Lago estate. Court filings describe the Florida-based inquiry as a ‘far-reaching’ investigation.

Recent developments indicate the investigation has expanded to include subpoenas for former FBI employees involved in the probe into Donald Trump’s retention of classified documents. Legal counsel for these employees has requested judicial clarification regarding whether testimony could violate existing orders restricting the release of certain information. The proceedings are overseen by U.S. District Judge Aileen Cannon in Fort Pierce. This follows the resignation of Joseph diGenova, a Trump ally who was intended to help lead the investigation.

Separately, Brennan remains a target of a Washington-based investigation examining whether he made false statements to Congress in 2023 regarding intelligence community assessments of Russian interference. Brennan’s legal counsel has denied allegations that he lied to Congress and characterized the proceedings as an attempt to frame a political opponent.

## Timeline

### 2026-09-24: FBI employees subpoenaed in Florida conspiracy probe

Former FBI employees have been subpoenaed to testify in a Florida grand jury probe investigating a potential conspiracy related to Donald Trump’s classified documents case.

6 sources. https://clstr.news/cluster/fbi-employees-subpoenaed-in-florida-conspiracy-probe

### 2026-09-21: John Brennan subpoenaed in Florida grand jury probe

Former CIA Director John Brennan has been subpoenaed by a Florida federal grand jury as part of a DOJ investigation into a potential conspiracy to violate Donald Trump’s civil rights.

2 sources. https://clstr.news/cluster/john-brennan-subpoenaed-in-florida-grand-jury-probe

### 2026-09-14: John Brennan subpoenaed to testify in DOJ conspiracy probe

Former CIA Director John Brennan has been subpoenaed to testify before a Florida grand jury on Oct. 15 regarding a DOJ investigation into a potential conspiracy to deprive Donald Trump of his civil rights.

17 sources. https://clstr.news/cluster/john-brennan-subpoenaed-for-florida-grand-jury-testimony

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Cite as: DOJ investigation into John Brennan. CLSTR, https://clstr.news/situations/doj-investigation-into-john-brennan