Singer Amy Winehouse has been found dead in her North London home, police have confirmed.

BBC News reports that ambulance crews were sent to her apartment, but the 27-year-old was pronounced dead.

Her death is being treated as unexplained, according to police.

Winehouse has struggled with drug and alcohol abuse. In May it was reported that she checked into a treatment facility after her father, Mitch, encouraged her to seek help.

Winehouse won five Grammy Awards for her 2008 album “Back to Black” and the single “Rehab,” including Best Pop Vocal Album, Record of the Year, Song of the Year, Best Female Pop Vocal Performance and Best New Artist.