British singer Amy Winehouse has been found dead at her home in north London.
Ambulances were called to the house at 3.54pm on Saturday. She was pronounced dead at the scene.
Police are treating her death as unexplained.
Winehouse, 27, has long struggled with drug and alcohol addiction and recently spent time in rehab.
She cancelled all tour dates and engagements last month after a series of erratic public appearances.
In Serbia she was jeered for appearing too drunk to perform. For 90 minutes, she mumbled through parts of songs and at times left the stage - leaving her band to fill in.
Winehouse had recently finished a course of alcohol rehabilitation in London and at the time was under strict instructions not to drink.
Winehouse's talent was discovered when she was 16.
She won widespread acclaim four years later at 20 with her debut album, Frank, released in 2003.
In 2006, Back to Black brought her worldwide stardom and five Grammy Awards.
She made her last public appearance on Wednesday night when she joined her goddaughter Dionne Bromfield on stage at The Roundhouse in Camden.
The singer danced with Bromfield and encouraged the audience to buy her album in the impromptu appearance before leaving the stage.
She recently worked with veteran singer Tony Bennett on a studio recording of a duet.
Tributes to Winehouse's talent
Tributes to the soul singer have been coming in from colleagues in the music industry and from her fans.
Mark Ronson, who produced Back to Black tweeted that Winehouse was his musical soulmate and like a sister.
Singer/songwriter and Matchbox 20 frontman Rob Thomas said he hoped people would show more compassion for their friends.
Music legend Tony Bennett, who recorded the classic pop standard "Body And Soul" with Winehouse last March, issued a statement calling her an artist of immense proportions.
The US-based Recording Academy, which gives out the Grammys, also issued a statement calling Winehouse a dynamic performer and musician who seamlessly blended rock, jazz, pop, and soul and created a sound all her own.