WASHINGTON, D.C. (AP) — National security adviser Michael Flynn has resigned after reports he misled Trump administration officials about his contacts with Russia’s ambassador to the U.S.

Flynn’s departure less than one month into the Trump administration marks an extraordinarily early shakeup in the president’s senior team of advisers.

READ MORE: Robert Bowers' Defense Seeks Change Of Venue For Upcoming Trial

Flynn was a loyal Trump supporter throughout the campaign, but his ties to Russia caused concern among other senior aides.

Flynn initially told Trump advisers that he did not discuss sanctions with the Russian envoy during the transition. Vice President Mike Pence, apparently relying on information from Flynn, publicly vouched for the national security adviser.

READ MORE: FBI Warns Of Hoax Kidnapping Scam Targeting 724-Area Codes

Flynn later told White House officials that he may have discussed sanctions with the ambassador.

Join The Conversation On The KDKA Facebook Page
Stay Up To Date, Follow KDKA On Twitter

MORE NEWS: Pennsylvania Treasury Returns $135M Of Unclaimed Property In 2021

(© Copyright 2017 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)