A meeting in 2016 between the Donald Trumps former kampagnechef and a person associated with the Russian intelligence services are "core" in Robert müller's Russia survey.
It appears by the documents in the case, writes the news agency AP.
The former kampagnechef Paul Manafort and the Russian Konstantin Kilimnik met allegedly in august 2016.
It is not where the meeting took place.
The 48-year-old freshman is allegedly linked to the military intelligence, previously known as the ABOMINATION. It is thought to be behind the Russian attempts to influence the u.s. elections.
It is, however, previously come forward, the two among other things, discussed Russia's annexation of the Ukrainian peninsula of Crimea in 2014 at the meeting.
According to a prosecutor under the special prosecutor, Robert Mueller gives the meeting "a greater insight into what we believe has happened" and what "we think is the motive".
Of the court documents it also appears that Constantine Kilimnik was in Washington D. C. to participate in the Trumps deployment in February 2017.
Paul Manafort was in september accused of having covered up his contact with Konstantin Kilimnik, and that he should have shared valgdata on the presidential election in 2016 with him.
It is the former FBI chief Robert Mueller, who is investigating whether Russia has influenced the us election in 2016.
According to The New York Times, the us federal bureau of investigation, FBI, in 2017 an investigation to determine whether Donald Trump worked for Russia.
the Investigation was launched after the president had dismissed the then FBI chief James Comey.
the FBI divided the investigation into two parts: A efterforskningsdel and an analysis of the legislation, where it was examined, on the president's dismissal of Comey was legal.
during the investigation, it was examined whether Trump either knowingly or unknowingly working for Moscow, and whether he was a threat to U.S. national security.
the Investigation was later put into the special prosecutor, Robert müller's broader investigation, writes The New York Times.
It is not clear whether the FBI's investigation of 2017 is still in progress.
President Donald Trump has repeatedly rejected, that he must have worked for the Russian interests. At the latest at a news conference in The White House on Monday.
Trump calls müller's investigation a witch-hunt against him.