Prince Harry has accused his brother, William, of physically assaulting him during an argument over his wife, Meghan Markle, in 2019, according to The Guardian.

The UK newspaper claims to have seen an advance copy of Prince Harry’s highly anticipated memoir, Spare, in which Harry, the Duke of Sussex, reportedly alleges his brother William, the Prince of Wales, knocked him to the floor during the altercation.

The alleged scuffle took place after a conversation between the two brothers, during which William,the heir to the British throne, called Markle “difficult”, “rude” and “abrasive,” according to The Guardian.

The confrontation escalated until William “grabbed me by the collar, ripping my necklace, and … knocked me to the floor’,” The Guardian reported.