An autopsy on singer Amy Winehouse Monday failed to determine what killed the 27-year-old star, leaving fans and family with a weeks-long wait for the results of toxicology tests.
Winehouse's devastated parents visited mourners outside her north London home to thank them for their support, ahead of a private family funeral that could be held as early as Tuesday.
The singer, who had struggled with drug and alcohol abuse for years, was found dead Saturday at home by a member of her security team, who called an ambulance. It arrived too late to save her.
The Metropolitan Police said Monday that a forensic post mortem "did not establish a formal cause of death and we await the results of further toxicology tests." Those are expected to take two to four weeks.
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