Singer Susan Boyle has been rushed to the Priory following her shock defeat in the Britain's Got Talent final, it is reported.
The Scottish star was taken on Sunday night to the private clinic after show staff contacted police to say she was acting strangely at her London hotel, according to The Sun.
Officers were called to assist and Boyle was reportedly taken by ambulance to the Priory in Southgate, north London, escorted by police.
A Scotland Yard spokeswoman said: "Police were called to doctors assessing a woman under the Mental Health Act. The woman was taken voluntarily by ambulance to a clinic. At the request of doctors, police accompanied the ambulance."
Earlier on Sunday it emerged Boyle was taking time off on the advice of a doctor after losing to dance act Diversity in the ITV talent show.
Television company talkbackThames released a statement offering her "ongoing support" amid newspaper reports that she had run amok backstage after her loss shouting "I hate this show".
Shock winners Diversity had earlier praised the 48-year-old, nicknamed the Hairy Angel, for her generous behaviour in defeat. Choreographer Ashley Banjo, 20, said: "She was so gracious about it, she said the best act won and, backstage, she said she had seen something special. She was so nice about it."
Boyle has helped to ensure that the competition kept grabbing the headlines, and the final became the most watched television programme in the UK for five years.
ITV said it attracted nearly three-quarters of the TV audience, with a peak of 19.2 million viewers.
Diversity took 24.9% of the public vote in the final, above Boyle's 20.2% share. Just under four million people voted, ITV said.
