07/23/2011 AT 01:00 PM EDT
The troubled singer, whose unique and soulful voice made her a Grammy winner, was found dead at her London apartment on Saturday, according to various reports
. She was 27.
"We are deeply saddened at the sudden loss of such a gifted musician, artist and performer," a statement from her U.S. record label reads. "Our prayers go out to Amy's family, friends and fans at this difficult time."
London's Metropolitan Police released also a statement about finding a body but didn't identify the singer: "Police were called by London Ambulance Service to an address in Camden Square NW1 shortly before 16.05hrs today, Saturday 23 July, following reports of a woman found deceased," the statement reads, according to the U.K.'s Daily Mail
. "On arrival officers found the body of a 27-year-old female who was pronounced dead at the scene. Inquiries continue into the circumstances of the death. At this early stage it is being treated as unexplained."
The singer, who was to some as well known for her struggles with addiction
as her music, was in rehab
as recently as May and canceled a planned summer
tour of Europe in June, following a disastrous appearance in Belgrade, Serbia.
But Winehouse's musical accomplishments were many, including nearly sweeping the Grammy Awards
in 2008 with her album Back to Black
, which scored five trophies including record of the year, song of the year and best new artist. Unable to attend the Grammys due to legal troubles, Winehouse performed via satellite from London during the ceremony.
The singer had a tumultuous relationship
with Blake Fielder-Civil, whom she married in 2007
. But the on-again, off-again couple
were officially divorced