The disturbance comes just days before King Charles III's highly anticipated coronation.
Harry's expected to attend Charles' ceremony on May 6 in London.
Both judges are set to perform at King Charles III's coronation concert.
The 72-year-old sister of King Charles III opened up about the type of monarch she thinks her brother will be.
Lionel Richie chats with ET after 'American Idol's live episode on Monday, airing on ABC.
King Charles’ coronation is scheduled to take place on May 6.
The coronation of King Charles III will be held on May 6.
The royal couple's coronation will take place on Saturday, May 6.
Prince William and Kate Middleton show off their mountain-climbing skills during a trip to Wales ahead of King Charles' coronation.
Meghan McCain and her mother, Cindy, chat with ET's Rachel Smith at the 2023 TIME100 Gala in New York City.
Kate Middleton showed off her subtle fancy footwork during a February visit to Copenhagen, which is now going viral.
Perry is just one of the performers set to take the stage at King Charles' coronation in London next month.
'American Idol' airs on Sundays and Mondays on ABC.
'King Charles: The Boy Who Walked Alone' premieres May 2 on Paramount+.
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