Amy Winehouse -- the Grammy winner who is best known for a song about refusing to go to rehab -- was found dead in her London apartment Saturday. She was 27.

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London police confirmed the death at a home in northern London but have not released a cause of death. Foul play is not suspected. Police issued a statement, saying, "At this early stage it is being treated as unexplained.” TMZ is reporting that they are "operating under the suspicion" it was an overdose. An autopsy originally scheduled for today (Sunday) is now due to be done Monday morning.

WATCH: Winehouse appeared on stage in London earlier this week for the iTunes Festival alongside her goddaughter Dionne Bromfield, but did not perform. Fan video shows her dancing, chewing gum, and at times mouthing the words but never actually singing or holding the microphone.