Podesta Group this week filed documents with the United States Department of Justice detailing services it completed three years ago for a pro-Russia Ukrainian political party, work that was allegedly performed under the guidance of former Trump campaign manager Paul Manafort and his longtime deputy Rick Gates.

Paul Manafort on CBS This Morning

That retroactive filing comes after months of media scrutiny into Manafort’s undisclosed lobbying and PR work for pro-Russian interest groups, as well as mounting federal investigations into the financial transactions behind that activity and any possible communication Manafort, a veteran lobbyist and longtime Republican strategist, may have had with Russian officials before and during the 2016 presidential election.

Between April 2012 and June 2014, Podesta represented the European Centre for a Modern Ukraine, a Brussels-based nongovernmental group backed by unnamed business officials, which bills itself as “an advocate for enhancing EU-Ukraine relations.” Foreign Agents Registration Acts documents filed in April show that Podesta was retained by ECFMU to assist in advancing its mission to improve ties between Ukraine and the west, “with an ultimate goal of Ukrainian admission into the European Union and closer alignment with other Western institutions.”

That work primarily focused on government relations and PR services within the United States, and included outreach to officials in the House and Senate, the State Department and the National Security Council, and as well as members of the media, nongovernmental organizations and think tanks.

Podesta also arranged meetings and media opportunities for Ukrainian and European politicians and business leaders visiting the U.S., and in Europe, sought to arrange meetings for U.S. politicians visiting European nations.

Lobbyists are required by federal law to register any work they do for a foreign government with the DOJ, per the Foreign Agents Registration Act of 1938. Podesta’s work for ECFMU had previously been disclosed to Congress through the Lobbying Disclosure Act, but the Washington, D.C.-based political affairs powerhouse declined to file its work with the DOJ, presumably because it was not aware that ECFMU was connected to a foreign government.

Indeed, in the April FARA filing, Podesta maintains that prior to engagement, ECFMU executives “provided written certification to the firm that ‘none of the activities of the Centre are directly or indirectly supervised, directed, controlled, financed, or subsidized in whole or in major part by a government of a foreign country or a foreign political party,’” and that Podesta would be immediately informed “should that representation no longer be true.”

“Neither [ECFMU executives] nor any representative of the European Centre for a Modern Ukraine ever informed the Registrant that the signed certification was no longer accurate. The Registrant has no direct knowledge of the European Centre for a Modern Ukraine’s sources of funding,” the documents read.

The April filing, which was signed by Podesta Group CEO Kimberly Fritts, shows the contract brought Podesta about $1.25 million in fees, not including expenses. Omnicom public affairs unit Mercury also performed work for ECFMU, and that D.C.-based strategy giant told the Associated Press in April that it too now plans to retroactively register its work with the Justice Department.

The AP was the first to mention Podesta and Mercury’s work in Ukraine, reporting on a series of emails the news agency acquired in August that Manafort and Gates had worked on a covert lobbying campaign to amass positive U.S. press coverage for Ukraine as well as schedule meetings between Ukrainian and U.S. officials.

The New York Times reported that $12.7 million in illegal, off-the-books cash payments were earmarked for Manafort from pro-Russia Ukrainian political group the Party of Regions, the former party of Ukraine strongman president Viktor Yanukovych. Manafort previously worked as Yanukovich’s advisor during his parliamentary election campaign. Yanukovych, who was ousted as Ukraine president in early 2014, now resides in exile in Russia.

Manafort, who was founding partner of Republican lobbying firm Black, Manafort & Stone and served as coordinator for Ronald Reagan’s 1980 presidential run, as well as presidential campaigns for Robert Dole, John McCain, George W. Bush and George H.W. Bush, was forced to resign from the Trump campaign in August after his lobbying work for the Party of Regions came to light.

Manafort previously said his work for the Party of Regions didn't require registration under the FARA act in the U.S., but he’s now apparently changed his tune, telling the AP in April that he will now register with the DOJ as a foreign agent, becoming the second former Trump advisor in a month to do so, after national security adviser Michael T. Flynn in March also retroactively disclosed to the Justice Department his lobbying firm’s work last year for a Dutch-owned private business with ties to the Turkish government.

The news also comes on the heels of the FBI’s March announcement that it had opened a counterintelligence investigation into whether members of Trump’s cabinet colluded with Russia in an attempt to rig the 2016 U.S. Presidential election, as well as the bombshell April report that the FBI last year obtained a secret warrant to monitor Trump foreign policy advisor Carter Page for possible ties to Russia, for whom they now believe he may have been acting as a foreign agent.

In January it was reported that Manafort is now under investigation by numerous federal agencies, including the CIA, NSA, FBI and the financial crimes unit of the Treasury Department. News outlets in April reported that the same day Manafort stepped down from his post, he formed a shell company that received millions in loans from Trump-affiliated businesses.