FILE – Britain’s Prince Harry, left, reacts as he walks with his best man, Prince William the Duke of Cambridge, as they arrive for the the wedding ceremony of Prince Harry and Meghan Markle at St. George’s Chapel in Windsor Castle in Windsor, near London, England, Saturday, May 19, 2018. Prince Harry has said he wants to have his father and brother back and that he wants “a family, not an institution,” during a TV interview ahead of the publication of his memoir. The interview with Britain’s ITV channel is due to be released this Sunday. (Ben Birchhall/pool photo via AP, File)

LONDON (AP) — Prince Harry alleges in a much-anticipated new memoir that his brother Prince William lashed out and physically attacked him during a furious argument over the brothers’ deteriorating relationship. The Guardian reported the claims on Thursday, saying it obtained an advance copy of the book. The memoir, titled “Spare,” is due to be published next week. It said Harry recounts a 2019 argument at his Kensington Palace home, in which he says William called Harry’s wife, the former actress Meghan Markle, “difficult,” “rude” and “abrasive.” Harry claims William grabbed his brother by the collar and ripped his necklace before knocking him down. Buckingham Palace has not commented on the claims.