Prince Harry Says He Saw 'Red Mist' in Prince William During Fight About Meghan Markle

Dotdash Meredith and Yahoo Inc. may earn commission or revenue on some items through the links below.

Prince Harry is talking more about his claim that Prince William attacked him following a fight over Meghan Markle.

The argument outlined in Harry's upcoming memoir, Spare, is alleged to have taken place at Harry's London home in 2019, according to a leaked extract of the book published by The Guardian.

When Prince William arrived at Prince Harry's home of Nottingham Cottage on the grounds of Kensington Palace, Harry claims his older brother was already "piping hot," according to the report.

Now, in a new clip from Harry's interview with ITV anchor Tom Bradby airing Sunday, the Duke of Sussex, 38, says, "I talk about the red mist that I had for so many years. I saw this red mist in him — he wanted me to hit him back but I chose not to."

"Red mist" is defined as a "feeling of extreme anger" by the Cambridge Dictionary.

RELATED: Prince Harry Drove Through Tunnel Where His Mother Died at Same Speed: 'I Want to Go Through It'

ITV News Prince Harry and Tom Bradby

According to the report, Harry says the incident began when William, 40, called Meghan Markle "difficult," "rude" and "abrasive." Harry replied that his brother was simply "parrot[ing of] the press narrative" about his wife.

For more on Prince Harry's memoir, listen below to our daily podcast PEOPLE Every Day.

"He set down (his glass of) water, called me another name, then came at me. It all happened so fast. So very fast," Harry writes in Spare about what happened later on inside the home, according to The Guardian.

Yui Mok - WPA Pool/Getty Images

"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. I lay there for a moment, dazed, then got to my feet and told him to get out."

William's office at Kensington Palace has declined to comment on the various claims in the book or the interviews.

Can't get enough of PEOPLE's Royals coverage? Sign up for our free Royals newsletter to get the latest updates on Kate Middleton, Meghan Markle and more!

Daniel Leavl-Olivas-Pool Getty Images Prince William and Prince Harry

Elsewhere in the new trailer, Harry also opens up about his past drug use, telling Bradby that it is "important to acknowledge."

When Bradby mentions that the book includes details of his use of marijuana, cocaine and magic mushrooms, Harry reiterates his desire to reconcile with the royal family.

"I want reconciliation. But first, there needs to be some accountability," says Harry.

RELATED: Prince Harry Addresses Whether He'll Attend King Charles' Coronation: 'The Ball Is in Their Court'

PENGUIN RANDOM HOUSE The book jacket of Prince Harry's memoir 'Spare'

RELATED: Prince Harry Claims King Charles Thanked Princess Diana for Giving Him a 'Spare' the Day He Was Born

Revelations from early sales of the book in Spain and other leaks have brought a slew of other revelations from Harry's autobiography into the public domain.