(CNSNews.com) The government watchdog group Judicial Watch filed a Freedom of Information Act (FOIA) lawsuit today against the FBI, seeking the bureau’s records on the removal and reassignment of Peter Strzok from Special Counsel Robert Mueller’s investigation of alleged Trump-Russia collusion.

Strzok, second-in-command of counterintelligence at the FBI, a member of Mueller’s investigative team, and the chief investigator of Hillary Clinton’s illicit use of an email server, was removed from the Mueller operation in the summer after numerous anti-Trump texts he exchanged with his alleged mistress, FBI lawyer Lisa Page, were discovered.

Strzok, for instance, described Trump as a “douchebag,” and also said of the speakers at the Republican National Convention, “TURN IT ON!!! THE DOUCHEBAGS ARE ABOUT TO COME OUT.”

Judicial Watch President Tom Fitton. (YouTube) 

Judicial Watch filed its lawsuit with the U.S. District Court in D.C. because the FBI did not respond to an Aug. 17 FOIA request.

“It is disturbing the FBI has stonewalled our request about the Mr. Strzok demotion for four months,” said Judicial Watch President Tom Fitton in a statement.

“One can only conclude the FBI and Justice Department (including Mr. Mueller’s operation) wanted to hide the truth about how Strzok’s and Page’s political biases and misconduct have compromised both the Clinton email and Russia collusion investigations,” said Fitton.

In addition to being the FBI’s chief of investigation into Clinton’s illicit use of a personal email server while she was Secretary of State, Strzok was also the FBI official who interviewed Hillary Clinton about the server on July 2, 2016. That interview was not recorded and there apparently is no transcript of the exchange.

In its FOIA lawsuit, Judicial Watch is seeking the following:

“All records regarding the assignment of FBI Supervisor Peter Strzok to the special counsel’s investigation led by former Director Robert Mueller.

President Donald Trump and former Secretary of State Hillary Clinton. (YouTube) 

“All records related to the reassignment of FBI Supervisor Peter Strzok from the special counsel’s investigation to another position within the FBI.

” [And] all SF-50 and/or SF-52 employment forms, as well as all related records of communication between any official, employee, or representative of the FBI and any other individual or entity.”

According to Judicial Watch, “Strzok reportedly oversaw the FBI’s interviews of former National Security Adviser, General Michael Flynn; changed former FBI Director James Comey’s language about Hillary Clinton’s actions regarding her illicit email server from ‘grossly negligent’ to ‘extremely careless’; played a lead role in the FBI’s interview of Clinton and is suspected of being responsible for using the unverified dossier to obtain a FISA warrant in order to spy on President Trump’s campaign.”