The FBI said Monday night that it is "closely" reviewing newly declassified memos showing the intelligence community kept secret for years evidence raising questions about the credibility and bias of the main accuser in President Donald Trump's 2019 impeachment case.

"The declassified impeachment memos show the so-called whistleblower behind the 2019 impeachment singled out Director Patel by name, relied on hearsay, submitted false claims, and had documented political bias — all of which was hidden from the American people," FBI spokesman Ben Williamson wrote on his X account. 

"This is the same playbook used during the Russia collusion hoax — which Director Patel exposed. The FBI has previously been reviewing these revelations closely and will continue to do so," he added.

The FBI was one of several agencies to react to a story Sunday night by Just the News that revealed the CIA analyst who alleged wrongdoing by Trump involving Ukraine policy was flagged for the "potential for bias," had lied to investigators about a key fact and only had hearsay evidence to back his claims.

That evidence was kept from Trump's impeachment proceedings by ex-Intelligence Community Inspector General Michael Atkinson, Director of National Intelligence Tulsi Gabbard said Monday. Gabbard accused the former watchdog of "weaponizing" the whistle-blower process to hurt Trump.

The alleged whistleblower's name was redacted from the newly declassified memos but has been identified in some media reports as retired CIA analyst Eric Ciaramella, who now works at a D.C. think tank and is a regular on a podcast critical of Trump policies.

Officials declined to publicly confirm whether Ciaramella was, in fact, the whistleblower when questioned by Just the News.

Ciaramella has appeared on numerous podcast episodes put out by the anti-Trump Lawfare outlet. Benjamin Wittes, the editor-in-chief of Lawfare, appeared on multiple episodes with Ciaramella. Wittes was described by Politico in 2017 as “The Bard of the Deep State” and is a longtime Trump critic and a self-described friend of fired FBI Director James Comey and Strzok.