Mueller's team reportedly issues subpoenas to lobbying firms that worked with Flynn's and Manafort's consulting groups
Robert Mueller
Robert Mueller

(Robert Mueller.AP Photo/Andrew Harnik)

Special counsel Robert Mueller's team has subpoenaed a number of Washington lobbying firms as part of its investigation into whether President Donald Trump's campaign colluded with Moscow to tilt the 2016 election in his favor, The Washington Post reported on Friday.

The firms that were subpoenaed have been associated with consulting firms led by former national security adviser Michael Flynn and former Trump campaign manager Paul Manafort. Both Flynn and Manafort are being scrutinized as part of the Russia investigation.

Manafort left the Trump campaign last August, and Flynn was forced to resign as national security adviser in February, when it emerged that he had misled Vice President Mike Pence about his contacts with Sergey Kislyak, the former Russian ambassador to the US.

The subpoenas come as both Flynn and Manafort face questions about allegedly failing to disclose the lobbying work they did on behalf of foreign governments, in violation of US federal law.

The Post reported that two of the subpoenas were issued to SGR LLC and Mercury Public Affairs, citing sources familiar with the matter. A lawyer representing SGR LLC confirmed to The Post that the firm had received a subpoena, and people close to Mercury Public Affairs said they had also received requests, though the company declined to comment.

Ukraine lobbying work

Mueller's team reportedly asked Mercury about public relations work it had conducted for the European Centre for a Modern Ukraine at Manafort's request. The organization's stated goal is to foster closer ties between Ukraine and the European Union, as well as the United States. It was founded, however, by Leonid Kozhara, a senior member of parliament for Ukraine's pro-Russia Party of Regions.

Manafort is linked to the party through his time serving as a top adviser to Ukrainian President Viktor Yanukovych, a pro-Russian strongman whom Manafort is widely credited with helping win the presidency in 2010.

Yanukovych was ousted in 2014 after widespread demonstrations again this decision to back out of a deal with the EU that would have distanced Ukraine from Russia and strengthened ties with the West. Yanukovych fled to Russia amid the protests, during which Ukrainian riot police opened fire on thousands of demonstrators, and is now living under the protection of the Kremlin.

Paul Manafort
Paul Manafort

(In this July 18, 2016, file photo, Trump campaign chairman Paul Manafort walks around the convention floor before the opening session of the Republican National Convention in Cleveland.AP Photo/Carolyn Kaster, File)