Two operatives reporting to President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE’s attorney Rudy Giuliani Rudy GiulianiThe Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting CIA found Putin 'probably directing' campaign against Biden: report Democrats fear Russia interference could spoil bid to retake Senate MORE established a back channel between him and Ukrainian officials, according to a BuzzFeed News report.

Lev Parnas and Igor Fruman met with top figures in Ukraine and set up meetings for Giuliani in an attempt to gather information to use in the 2020 presidential election, according to the publication.

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Their activities included pushing Ukrainian prosecutors to investigate former Vice President Joe Biden Joe BidenPelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Hillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Fox News poll: Biden ahead of Trump in Nevada, Pennsylvania and Ohio MORE, who is the current front-runner in the Democratic primary. The report also says that Ukrainian officials planned to intercede on former Secretary of State Hillary Clinton Hillary Diane Rodham ClintonFox News poll: Biden ahead of Trump in Nevada, Pennsylvania and Ohio Trump, Biden court Black business owners in final election sprint The power of incumbency: How Trump is using the Oval Office to win reelection MORE’s behalf in the 2016 election by leaking information on Trump’s then-campaign chairman, Paul Manafort Paul John ManafortOur Constitution is under attack by Attorney General William Barr Bannon trial date set in alleged border wall scam Conspicuous by their absence from the Republican Convention MORE.

Giuliani strongly disputes the claims made in the BuzzFeed report, indicating the media is looking to protect Biden, who is the front-runner in the 2020 Democratic presidential primary.

He told The Hill Monday, "This is a pathetic effort to cover up what are enormous allegations of criminality by the Biden family."

In March, about a month after a meeting with Parnas, Fruman and Giuliani, prosecutors in Kiev announced they would investigate certain officials in connection with trying to rig the election for Clinton, which Trump himself touted in an interview with Fox News.

Parnas has said he also expects information the two obtained to play a major role in Attorney General William Barr Bill BarrHillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Bipartisan representatives demand answers on expired surveillance programs YouTube to battle mail-in voting misinformation with info panel on videos MORE’s investigation of the origins 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 investigation, according to BuzzFeed.

“It’s all going to come out,” he told the publication. “Something terrible happened and we’re finally going to get to the bottom of it.”

Parnas told BuzzFeed he and Fruman did not draw a salary for working as liaisons between Giuliani and Ukrainian officials.

“All we were doing was passing along information,” he told BuzzFeed. “Information was coming to us — either I bury it or I pass it on. I felt it was my duty to pass it on."

He told the publication the back channel was initiated on the Ukrainian end, with officials telling him and Fruman that they needed connections to meet with U.S. officials and knew Parnas was acquainted with Giuliani.

Giuliani told The Hill he does not know if the Department of Justice is looking into the Biden controversy. But he added that if tens of millions of dollars have been spent on multiple "completely fraudulent" allegations of collusion, "you'd think there would be one investigation of the Bidens."

This article was updated at 6:08 p.m.