[Loukas]

Singer Amy Winehouse has been taken to hospital for tests after fainting in London, her spokesman has confirmed.

She was "doing admin" when she became unwell at her home on Monday afternoon but "quickly recovered", he added.

Her manager's assistant was able to stop her falling and Winehouse's father, Mitch, escorted her to hospital "as a precaution", the spokesman said.

Doctors are unsure as to the cause of the incident and the star may be kept in hospital overnight for observation.

The 24-year-old had been signing autographs for Canadian fans who had been waiting outside her house all day, her spokesman said.

She is being treated at the London Clinic in Marylebone.

'Serious problems'

There have long been concerns about Winehouse's health.

Last year, she was admitted to a hospital in London suffering from "severe exhaustion", and there were reports she was being treated in a rehabilitation clinic.

And following a succession of cancelled gigs, the 24-year-old's father spoke out about her drug use.

Mitch Winehouse told BBC Radio 5 Live his daughter and her husband Blake Fielder-Civil had "serious problems" but said neither was in "imminent danger of death".

Police confirmed in May that Winehouse would not face charges over a video that purported to show her smoking a crack cocaine pipe.

Concert plans

Earlier this year the singer was cautioned by police after admitting a common assault following an incident in Camden, north London.

Last week it was confirmed Winehouse had played an exclusive concert at an art gallery in Moscow for Chelsea FC owner Roman Abramovich.

And later this month she is due to be on the bill in London's Hyde Park, at a gig marking the 90th birthday of former South African president Nelson Mandela.

The singer's hits include Rehab - including the refrain "they tried to make me go to rehab/ I said no, no, no" - and Back to Black, the title track from her current album.

BBC News