Ex-Trump national security adviser pleads guilty to lying to FBI

WASHINGTON — Former national security adviser Michael Flynn has plead guilty to making false statements to the FBI.

Flynn made the plea at 10:30 a.m.

We're working to learn details of the allegations on Channel 2 Action News at 4 p.m.

Flynn is accused of "willfully and knowingly" making false statements to the FBI while serving in the Trump administration

Court documents released Friday show Flynn has been charged with a single count of making false statements.

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Prosecutors with the office of Special Counsel Robert Mueller say Flynn falsely stated to the FBI that he had not discussed sanctions with the then-Russian ambassador to the United States.

Flynn is the fourth person charged in connection with Mueller's investigation.

Flynn was forced to resign in February from the national security adviser position after he misled Vice President Mike Pence and other administration officials about the nature of his conversations with then-Russian ambassador to the United States Sergey Kislyak during the presidential transition. Flynn denied he discussed the U.S. sanctions placed on Russia with Kislyak, but transcripts of Flynn and Kislyak’s phone calls reviewed by Justice Department lawyers showed otherwise.

The retired three-star general quickly became a target of Mueller's investigation into Russian election interference given his contacts with foreign governments before the election. Flynn was paid over $500,000 in speaking fees for speeches for Russian groups that he did not initially list on a financial disclosure form. He also failed to disclose lobbying work his firm engaged in on behalf of the Turkish government.

On Oct. 30, two members of Trump's campaign staff, former campaign chair Paul Manafort and his longtime associate Rick Gates, were indicted on 12 counts brought by Mueller's team, including conspiracy against the U.S., conspiracy to launder money and serving as an unregistered agent of a foreign principal.

That same day, it was also revealed that a third Trump campaign adviser, George Papadopoulos, pleaded guilty earlier in the month to making false statements to FBI agents probing his attempts to arrange a meeting between Russian officials and the campaign.

The Associated Press and ABC News contributed to this report.

Special Report: Plea hearing for former Nat. Sec. adviser Mich...

ABC News Special Report: Plea hearing has been scheduled for former National Security Adviser Michael Flynn, the special counsel's office announces. Flynn has been charged with one count of making false statements. http://abcn.ws/2ixWHDL

Posted by ABC News on Friday, December 1, 2017