Newman, who left the White House past year, says that Trump used the racial slur while taping "The Apprentice" and that he was caught on camera.
Newman claims in her book that her former boss, President Donald Trump, is a racist who has repeatedly used the N-word.
In her new memoir, "Unhinged", she writes sources told her the tape was from outtakes of his NBC series. She's criticizing the media for giving her a platform.
"It had finally sunk in that the person I'd thought I'd known so well for so long was actually a racist", she writes.
"They all told me that President Trump hadn't just dropped a single N-word bomb", Omarosa writes. But tapes, unfortunately for him, seem to be a theme of his presidency, and Manigault Newman's have not yet been swept up in a government investigation. But, at least according to her book's official synopsis, "that relationship has come to a decisive and definitive end".
Manigault Newman, who was the communications director for the White House Public Liaison Office, also claims she personally witnessed Mr. Trump directing racial slurs toward someone else since he's been president - the husband of White House counselor Kellyanne Conway, George Conway, who is half Filipino.
"Instead of telling the truth about all the good President Trump and his administration are doing to make America safe and prosperous, this book is riddled with lies and false accusations", Sanders said in a statement.
Omarosa worked with Trump on The Apprentice and followed him into the White House, drawing an annual salary of $179,700, was married at the Trump International Hotel in Washington, DC, and brought her bridal party to the White House for photos. "The allegation is not credible, and indeed is ridiculous, particularly in light of the timing of her departure from the White House-December 12, 2017".
At the time, an early Apprentice producer took to Twitter to say "there are far worse" behind-the-scenes tapes from the show.
Manigault-Newman quotes Trump as saying: "Would you look at this George Conway article?" "F**ing FLIP! Disloyal! Fucking Goo-goo".
More details: Omarosa claims that Trump had a tanning bed installed in the White House residence, per the Post.