Special prosecutor Robert Mueller asks White House for documents on Flynn

According to the daily new yorker, the investigators have also interviewed witnesses to determine whether Mr. Flynn had received payments secrets on the part of the Turkish government towards the end of the election campaign of 2016.

Special counsel Robert Mueller is questioning witnesses about whether former Trump administration national security adviser Michael Flynn was secretly paid by the Turkish government during the final months of the 2016 presidential campaign, according to The New York Times.

Flynn's business, Flynn Intel Group, worked with a Turkish-American businessman who paid the company $530,000 to "discredit an opponent of the Turkish government who has been accused of orchestrating last year's failed coup in the country".

Although the request is not a subpoena, this is the first time the White House has been directly asked to transfer documents to the Mueller's investigation team.

Defense Intelligence Agency director US Army Lt.

Although receiving money from foreign governments is legal, failing to register as a foreign agent if you have done so is a crime.

A transcript of intercepted calls between Mr Flynn and Mr Kislyak revealed they had discussed USA sanctions imposed when former President Barack Obama concluded that Moscow had interfered in the U.S. election campaign.

Mr. Flynn is at the centre of suspicions about a possible involvement of Russian.

They have sought related documents from the White House and have asked related information from witnesses during interviews, a significant development in the Russian Federation investigation.

Mueller's team is investigating whether President Trump's campaign colluded with Russian Federation during the 2016 election.

Robert Mueller reportedly asked the White House for records on former national security adviser Michael Flynn. Trump has publicly stated in the past that he believes Mueller should restrict his investigation on Russia's involvement in the election and not expand into his or his associates' finances.