Attorney General William Bar has reportedly formed a team to review actions of Justice Department and FBI officials leading up to the launch of the federal probe into President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE's campaign and possible Russian collusion.

Bloomberg reported Tuesday evening that Barr has assembled a team to review certain counterintelligence decisions made by Justice Department and FBI officials including during the probe into Trump's campaign during the election in the summer of 2016.

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Barr had testified before a House Appropriations subcommittee on Tuesday that he was reviewing "conduct" from around that period.

“I am reviewing the conduct of the investigation and trying to get my arms around all the aspects of the counterintelligence investigation that was conducted during the summer of 2016,” he said.

News of the review comes following the conclusion of special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE’s nearly two-year investigation into Russian interference in the 2016 campaign.

Mueller was appointed as special counsel in May 2017 to take over the Russia probe after Trump fired former FBI Director James Comey James Brien ComeyDemocrats fear Russia interference could spoil bid to retake Senate Book: FBI sex crimes investigator helped trigger October 2016 public probe of Clinton emails Trump jabs at FBI director over testimony on Russia, antifa MORE.

Barr’s review is reportedly separate from the current investigation being conducted by the Justice Department inspector general’s office, Bloomberg reported.

The attorney general said during his testimony that he expects the internal inspector general review to be completed by May or June.

Republicans have long argued that anti-Trump bias at the FBI triggered the investigation and the "Steele Dossier," controversial opposition research conducted on the Trump campaign.

Rep. Robert Aderholt Robert Brown AderholtLobbying world The Hill's Coronavirus Report: WHO vs. Trump; Bernie's out Bottom line MORE (R-Ala.) during Barr’s hearing questioned if the Justice Department would investigate “how it came to be that your agency used a salacious and unverified dossier as a predicate for FISA order on a U.S. citizen?”

Trump and his allies have claimed that the dossier was used to obtain a secret warrant to spy on former Trump campaign aide Carter Page, Bloomberg noted.

Comey, however, rejected that assertion last year when he testified before Congress. He said the investigation was opened the officials learned that another Trump campaign aide, George Papaopoulous “had with an individual in London about stolen emails that the Russians had that would be harmful to Hillary Clinton Hillary Diane Rodham ClintonButtigieg stands in as Pence for Harris's debate practice Senate GOP sees early Supreme Court vote as political booster shot Poll: 51 percent of voters want to abolish the electoral college MORE.”

Mueller concluded his investigation last month and Barr summarized the contents in a March 24 letter, revealing that the special counsel did not “establish” that associates or members of the Trump campaign coordinated or conspired with the Russian government.

Barr’s summary noted that Mueller did not make judgement on whether Trump obstructed justice. Barr wrote that he and Deputy Attorney General Rod Rosenstein Rod RosensteinDOJ kept investigators from completing probe of Trump ties to Russia: report Five takeaways from final Senate Intel Russia report FBI officials hid copies of Russia probe documents fearing Trump interference: book MORE reviewed the evidence and determined it insufficient to accuse Trump of obstructing the investigation.

Bar told lawmakers during his Tuesday testimony that he will release a public version of Muller’s report “within a week.”