The Amy Winehouse death shocked and saddened her many fans.  The singer was only 27 years old.

She was found dead at her apartment in London on Saturday.  The cause of death remains unknown.

On arrival officers found the body of a 27-year-old female who was pronounced dead at the scene. At this early stage it is being treated as unexplained, said a police statement, reported the UK Press Association.

Winehouse was a controversial singer and had a history of drug and alcohol abuse.  On news of her death, though, celebrities and fans alike poured out grief and condolences.

Celebrities

So sad about Amy Winehouse -she was so talented. Really tragic, tweeted Jessica Alba.

Just heard a report amy winehouse has died. If true, such a waste of a great talent, tweeted Anderson Cooper.

Truly sad news about Amy Winehouse. My heart goes out to her family. May her troubled soul find peace, tweeted Demi Moore.

Fans

RIP , amy winhouse , people that NEVER listened to will listen to her now smh ! but she won 5 grammys <3, tweeted @tianaaaax33.

Amy Winhouse found dead in her London apt. Tragic, horribly sad and not unexpected. Such a waste, tweeted @slarkpope.

So sad the news about Amy Winhouse, I had hoped she'd turned it around, she was really talented and had a great gift, tweeted @jamborayok.

READ: Amy Winehouse Death: We Should Remember Her for More Than Going to Rehab