(CNN) – President Donald Trump said that his niece, who is set to publish a tell-all book about him and his family, had signed a nondisclosure agreement and is "not allowed to write a book."
Mary Trump, the President's niece and the daughter of his late older brother, Fred Trump, Jr., has penned a book described as a "revelatory, authoritative portrait of Donald J. Trump and the toxic family that made him." The book is set to be released on July 28, according to the book's publisher Simon & Schuster.
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"She's not allowed to write a book," Trump told Axios in an interview Friday. "You know, when we settled with her and her brother, who I do have a good relationship with — she's got a brother, Fred, who I do have a good relationship with, but when we settled, she has a total ... signed a nondisclosure."
The Daily Beast first reported that Mary Trump had signed a nondisclosure agreement.
Simon & Schuster declined to comment Sunday evening. CNN had previously reached out to Mary Trump for comment.