President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE on Saturday lashed out at MSNBC's Joy Reid, saying that the TV host has "NO talent."

"Who the hell is Joy-Ann Reid? Never met her, she knows ZERO about me, has NO talent, and truly doesn’t have the 'it' factor needed for success in showbiz," Trump tweeted.

"Had a bad reputation, and now works for the Comcast/NBC losers making up phony stories about me. Low Ratings. Fake News!" he continued.

Who the hell is Joy-Ann Reid? Never met her, she knows ZERO about me, has NO talent, and truly doesn’t have the “it” factor needed for success in showbiz. Had a bad reputation, and now works for the Comcast/NBC losers making up phony stories about me. Low Ratings. Fake News! — Donald J. Trump (@realDonaldTrump) September 14, 2019

It was not immediately clear what prompted the president to go after Reid ahead of her Saturday morning show, though the MSNBC host had criticized recent remarks by Trump while guest hosting "All in with Chris Hayes" on Friday night.

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The Hill has reached out to MSNBC for comment.

The MSNBC host and a hashtag for her show, #AMJoy, trended on Twitter Saturday after the president's post, with members of the program appearing to take the president's tweet in stride.

"Great job getting us trending, #reiders! Can we get our #AMJoy hashtag even higher? Let's do it!" the host tweeted to her followers.

Trump's tweet Saturday morning came hours after Reid appeared on the network and highlighted a number of recent remarks by the president.

In a segment on Trump's visit to Baltimore for the House GOP retreat, she mocked his "Mike Pounce" gaffe and said he “went on to treat the gathered Republicans to some smoking hot beauty tips” while discussing his remarks on lightbulbs.

She also said that he sounded "like a desperate man" when he said "whether you like me or not it makes no difference because our country will go to Hell if any of these people get in."

Reid has been critical of the president in the past, releasing a book about Trump earlier this summer titled "The Man Who Sold America."

She said in a tweet earlier this month that Trump "has turned the presidency into a travel agency servicing the Trump Organization and its properties and golf clubs around the world."

Trump's tweet attacking the MSNBC host Saturday morning came after he sent another tweet saying "A Very Stable Genius!" and offering thanks for the comment, though he did not provide any more information on the remark or attribute it.

He also shared several tweets touting his approval rating in the GOP and declared "MAKE AMERICA GREAT AGAIN!" and "KEEP AMERICA GREAT."

Updated: 12:25 p.m.