[UPDATE] 7-24-9:30AM

LONDON (AP) -- Amy Winehouse's mother has told a British newspaper the singer was not well when they met a day before she died.

The Sunday Mirror quotes Janis Winehouse as saying she believed it was "only a matter of time" before her daughter died. The 27-year-old singer was found dead at her London home on Sunday.

Janis told the tabloid: "She seemed out of it. But her passing so suddenly still hasn't hit me."

Police say the cause of her death is being treated as "unexplained." A post-mortem is expected Monday or Tuesday.

Fans and neighbors paid tribute to the singer on Sunday, leaving a growing pile of flowers, candles and messages outside of her home. One read "R.I.P. Never Forgotten," while another said "It's all right, love. Go now."
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[UPDATE] 7-23-11 9:00PM --

UNDATED (AP) -- Hollywood celebrities say they're shocked and
saddened to hear of singer Amy Winehouse's death.

The 27-year-old Grammy winner was found dead Saturday by
ambulance crews called to her home in north London's Camden area.
The cause of death was not immediately known.

Producer Mark Ronson, who has worked closely with the singer,
says she was his "musical soulmate." He says it's one of the
"saddest days of my life."

Many celebrities took to Twitter to express condolences. Actress
Demi Moore tweeted that her heart goes out to Winehouse's family,
adding "May her troubled soul find peace."

Singer and actress Kelly Osbourne tweeted that she lost one of
her best friends. And American Idol winner Kelly Clarkson called
the death, "a waste of a gifted person."

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LONDON — Amy Winehouse, the beehived soul-jazz diva whose self-destructive habits overshadowed a distinctive musical talent, was found dead Saturday in her London home, police said. She was 27.

Winehouse shot to fame with the album "Back to Black," whose blend of jazz, soul, rock and classic pop was a global hit. It won five Grammys and made Winehouse — with her black beehive hairdo and old-fashioned sailor tattoos — one of music's most recognizable stars.

Police confirmed that a 27-year-old female was pronounced dead at the home in Camden Square northern London; the cause of death was not immediately known. London Ambulance Services said Winehouse had died before the two ambulance crews it sent arrived at the scene.

"I didn't go out looking to be famous," Winehouse told the Associated Press when "Back to Black" was released. "I'm just a musician."

But in the end, the music was overshadowed by fame, and by Winehouse's demons. Tabloids lapped up the erratic stage appearances, drunken fights, stints in hospital and rehab clinics. Performances became shambling, stumbling train wrecks, watched around the world on the Internet.