(NBC) Former White House aide Omarosa Manigault Newman said Sunday that she has personally heard a tape of President Donald Trump using the N-word during filming for NBC’s “The Apprentice,” a revelation she says “confirmed that he is truly a racist.”

Newman made the charge during an exclusive interview with NBC’s “Meet the Press,” days before the release on Tuesday of her new book, “Unhinged: An Insider’s Account of the Trump White House.” In the book, Newman describes hearing about the tape but not hearing it herself. She said Sunday that she personally listened to it after her book had gone to press.