Simon Cowell is in hospital facing surgery after breaking his back in a fall at his home in California.
The Britain's Got Talent and X Factor judge was injured testing his new electric bike in a courtyard at his Malibu mansion.
The 60-year-old is in hospital and is "doing fine" according to his representatives.
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A spokeswoman for the star told the Hollywood Reporter: “Simon had a fall from his bike testing his new electric bike in the courtyard at his house in Malibu with his family
“He hurt his back and was taken to hospital. He’s doing fine, he’s under observation and is in the best possible hands.”
She added later: “Simon has broken his back and is having surgery this evening.”
On Twitter, Good Morning Britain host Piers Morgan tweeted: "So sorry to hear this. Sounds a very nasty accident. I wish Simon a successful operation and a full and speedy recovery."
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It is unclear if it will now impact on the filming of the upcoming series of Britain's Got Talent or its US equivalent, America's Got Talent.
Earlier this month it was revealed that Simon will miss the Britain's Got Talent finals for the first time ever.
The impact of the coronavirus has led to changing schedules meaning the series will be filmed at the same time as America's Got Talent and Simon decided to stay in the US where he lives to fill his commitments there.