Authorities have said it appears actress Brittany Murphy died of natural causes after becoming ill with flu-like symptoms in the days before she collapsed in the bathroom of her Hollywood Hills home.
Assistant Chief Coroner Ed Winter said an autopsy had been conducted and officials were awaiting the results of toxicology and tissue testing before determining an official cause of death.
They also interviewed Murphy's personal physician and examined prescription drugs taken from her home.
Paramedics tried to revive Murphy early on Sunday, but she was pronounced dead at Cedars-Sinai Medical Centre. The hospital said she died of cardiac arrest.
The autopsy found no signs of injury to the body of the 32-year-old star of Clueless and 8 Mile. Police did not suspect foul play.
"We went to the scene to see if there was anything that suggests foul play, and there wasn't," Los Angeles police Detective Wendi Berndt said.
It could take up to six weeks before a determination is made public on her cause of death.
Winter said Murphy's family reported she had been ill and that could have contributed to her death. He said he had no further details about the medication taken from the home Murphy shared with her British screenwriter husband Simon Monjack.
Funeral arrangements have not been announced.
"The sudden loss of our beloved Brittany is a terrible tragedy," Monjack and her family wrote in a statement. "She was our daughter, our wife, our love, and a shining star."