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