President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE on Sunday tweeted for the first time since news broke that special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE had finished his investigation into Russian election interference and possible collusion between the president's campaign and Moscow.

"Good Morning, Have A Great Day!" he said in a post on Sunday morning, his first tweet since Friday afternoon.

"MAKE AMERICA GREAT AGAIN!" he added.

Good Morning, Have A Great Day! — Donald J. Trump (@realDonaldTrump) March 24, 2019

MAKE AMERICA GREAT AGAIN! — Donald J. Trump (@realDonaldTrump) March 24, 2019

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Trump, who is typically active on Twitter, had been silent over the weekend, which began with Mueller submitting his confidential report to Attorney General William Barr late Friday.

Trump is spending the weekend at his Mar-a-Lago resort in Palm Beach, Fla., where he golfed with entertainer Kid Rock on Saturday.

An aide reportedly said the president is in a "great mood."

Conclusions from the Mueller investigation could be shared with Congress as soon as this weekend, Barr told the House and Senate Judiciary committees in a letter circulated on Friday by the Justice Department.

Trump long railed against the investigation, calling it a politically motivated "witch hunt" and often insisting there was "no collusion" between his campaign and Russia.

Mueller has not recommended any additional indictments, but the special counsel has already indicted or secured guilty pleas or convictions from several of Trump's former associates, including former Trump campaign chairman Paul Manafort Paul John ManafortOur Constitution is under attack by Attorney General William Barr Bannon trial date set in alleged border wall scam Conspicuous by their absence from the Republican Convention MORE, Trump's former personal attorney Michael Cohen Michael Dean CohenA huge deal for campaign disclosure: Trump's tax records for Biden's medical records Our Constitution is under attack by Attorney General William Barr Eric Trump says he will comply with New York AG's subpoena only after Election Day MORE and Trump's longtime confidant Roger Stone Roger Jason StoneThe agony of justice Our Constitution is under attack by Attorney General William Barr Justice IG investigating Stone sentencing: report MORE.