In his new memoir titled "Spare", which is due to be released by the end of the month, the UK's Prince Harry reveals details of how he was physically attacked by his brother Prince William during a quarrel in 2019, The Guardian reported on Wednesday. 

According to the report, the argument reportedly took place in the kitchen of Harry's residence in London.

During the argument, William reportedly called Harry's wife Meghan Markle "difficult," "rude" and "abrasive", and then proceeded to throw his brother to the ground as they kept arguing.

"He grabbed me by the collar, ripping my necklace, and he knocked me to the floor. I landed on the dog’s bowl, which cracked under my back, the pieces cutting into me," Harry said in his book.

He then told William to leave after which William looked "regretful and apologized," he wrote in his book. 

Quoting an exchange between the two in the book, William told Harry, "You don’t need to tell Meg about this.

- You mean that you attacked me?

- I didn’t attack you, Harold," William answered. 

Read more: Princes Harry & Andrew, Meghan not invited to Buckingham event

Harry and Meghan documented their 2020 departure from the British royal family in a Netflix docuseries that was released last month. 

Sources stated that the series "Harry and Meghan" accused the British royals of a “huge level of unconscious bias” toward Meghan.

Harry also accused his family of being “part of the problem” when it comes to racism in the UK.

After abandoning their royal titles, the pair moved to California in 2020. In March 2021, they went through a tell-all interview with Oprah, as they underlined true life at Buckingham Palace and with the royal family.

In several excerpts of interviews with ITV in the UK and CBS in the US ahead of the book's release, Harry said he wants "a family, not an institution."

"I would like to get my father back. I would like to get my brother back," Harry said.

Read more: Princes Harry, William drifting apart ahead of tell-all memoir release