President Trump's former national security adviser Michael Flynn leaves federal court in Washington, Tuesday, Dec. 18, 2018. (AP Photo/Carolyn Kaster)

People outside the federal courthouse were heard chanting "lock him up" and "USA" as Michael Flynn left the building following the delay of his sentencing.

Flynn left the courthouse without speaking to reporters.

Judge Emmet Sullivan postponed Flynn's sentencing until 2019. Both sides now have until March 13 to file a status report with the court.

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