ABC News reports:
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. Her funeral will be held Tuesday.
A family spokesman said the private funeral "for family and close friends" would be held at an undisclosed time and place.
Winehouse's devastated parents visited mourners outside her north London home to thank them for their support. 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.