Trump attacks former White House aide Omarosa Manigault-Newman on Twitter
US President Donald Trump targeted his former aide and "Apprentice" reality star Omarosa Manigault-Newman on Monday, calling her "vicious" and a "lowlife".
"Wacky Omarosa, who got fired 3 times on the Apprentice, now got fired for the last time. She never made it, never will," Trump wrote in a series of tweets.
Wacky Omarosa, who got fired 3 times on the Apprentice, now got fired for the last time. She never made it, never will. She begged me for a job, tears in her eyes, I said Ok. People in the White House hated her. She was vicious, but not smart. I would rarely see her but heard....
— Donald J. Trump (@realDonaldTrump) August 13, 2018
...really bad things. Nasty to people & would constantly miss meetings & work. When Gen. Kelly came on board he told me she was a loser & nothing but problems. I told him to try working it out, if possible, because she only said GREAT things about me - until she got fired!
— Donald J. Trump (@realDonaldTrump) August 13, 2018
While I know it’s “not presidential” to take on a lowlife like Omarosa, and while I would rather not be doing so, this is a modern day form of communication and I know the Fake News Media will be working overtime to make even Wacky Omarosa look legitimate as possible. Sorry!
— Donald J. Trump (@realDonaldTrump) August 13, 2018
His comments followed the public release of taped conversations between Manigault-Newman and White House Chief of Staff John Kelly that document her dismissal from the White House staff.
Omarosa left the White House in December and her television interview coincided with the release of a book, "Unhinged: An Insider Account of the Trump White House," detailing her time there.
Earlier, Manigault-Newman released a recording of a phone conversation with Trump that purportedly took place after she was fired by Kelly. 
In the recording, White House Chief of Staff John Kelly can be heard talking to Omarosa in the Situation Room. "We want to talk to you about leaving the White House," Kelly said, as he cited integrity issues for her leaving. "It's important to understand that if we make this a friendly departure ... you can go on without any type of difficulty in the future relative to your reputation."
Manigault was previously best-known for repeatedly being fired on the NBC's "The Apprentice" and was one of Trump's more visible African-American supporters during his campaign.