Amy Winehouse is still under the observation of doctors at a hospital in London, her spokesperson has confirmed.
Winehouse, who was admitted to the London Clinic in Marylebone yesterday (June 16th) after fainting at her home, had been expected to leave the facility today.
But her spokesperson said that tests had come back “inconclusive”.
Winehouse was taken ill whilst “doing admin” with her assistant and taken to hospital by her father, Mitch, as a precaution.
She had just returned from signing autographs for a Canadian fan who had been waiting patiently outside her Camden home when she collapsed.
Winehouse is due to perform later his month at Nelson Mandela's 90th Birthday celebrations in Hyde Park.
Winehouse was also recently unveiled as a the special guest performer at this years Glastonbury Festival, where she is due to take to the stage ahead of Saturday (June 26th) headliner Jay-Z.
Amy Winehouse meets fans