Reasons for Amy Winehouse’s death are still unknown and police say it could take up to four weeks to get to the bottom of it.

However, Amy’s family members believe that her quitting alcohol cold turkey could have been what caused her sudden death. Her father Mitch said:

“Three years ago, Amy conquered her drug dependency, the doctors said it was impossible but she really did it. She was trying hard to deal with her drinking and had just completed three weeks of abstinence. She said, “Dad, I’ve had enough of drinking. I can’t stand the look on your and the family’s faces any more.”

Speaking with the daily Star Dr. Julian Spinks, who gave the singer a clean bill of health the day before her untimely death, said, “If you go from very high alcohol consumption to nothing you can get the DTs and fits that can leave you unconscious, in danger of stopping breathing and dying because of that.”

On July 28th, Amy’s father and her mother Janis returned to her North London home with their son Alex to look at tributes left outside. They are currently observing the Jewish tradition of Shiva, which is a period of mourning and is part of the customs of bereavement in Judaism.