Paul Manafort who chaired Donald Trump’s presidential campaign has confirmed receiving $17 million from the Party of Regions in 2012-2013, BBC has reported.

"Manafort disclosed the total payments his firm received between 2012 and 2014 in a Foreign Agents Registration Act filing late Tuesday that was submitted to the U.S. Justice Department," Washington Post reported.

The consulting firm of the former chair of Trump’s presidential campaign had to register as a foreign agent to consult the Ukrainian party. Deliberately failing to file as a foreign agent may result in a felony criminal charge.

The disclosures show much of the work Manafort focused on the Party of Regions in 20120213: implementing election campaign strategies, developing its party platform and conducting international election monitoring.

The filing shows that the firm signed the contract with acting Head of the Party of Regions Volodymyr Rybak, who was Ukrainian Verkhovna Rada Speaker in 2012-2014.

The disclosures say that the cooperation of the Manafort's company and the Party of Region focused on "decentralization of power with the transmission of powers to the regions as much as possible, the building of a western-type political party and the transformation of Ukraine into the most attractive country for investment in the region."

The firm received $17 million from the Ukrainian party. The firm spent nearly $4 million to advance the party’s interests through polling and local salaries in Ukraine, including $2.1 million for travel.