Donald Trump has hit back at his former aide Omarosa Manigault Newman after she released tapes of secretly recorded White House conversations, including one in which the president appeared to express surprise that she had been fired from his administration.

Trump tweeted on Monday:  “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....”

The president also admitted on Monday that his response to  her claims were "not presidential" . He tweeted on Monday:  "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!"

Manigault Newman, a former Apprentice reality TV star who became the most prominent African American in the Trump White House, has been promoting her new book Unhinged, which offers a scathing account of life in the West Wing.The memoir claims Trump is a "racist" who has used the "N-word" , alleging he was caught on mic uttering the slur “multiple times” during the making of his reality TV show The Apprentice.

In a series of tweets on Monday night, the president hit back at those claims, too, saying: “There are NO TAPES of the Apprentice where I used such a terrible and disgusting word ... I don’t have that word in my vocabulary, and never have.”

On Monday, Manigault Newman released an apparent recording of an interaction with Trump in 2017 after she was dismissed from the White House.

“Omarosa? Omarosa what’s going on? I just saw on the news that you’re thinking about leaving? What happened?” Trump says on the tape.