Beverly Hills police have not received a formal cause of death for singer Whitney Houston from the coroner’s office, a report detectives would need before officially closing their investigation.
Beverly Hills police Lt. Mark Rosen told The Times that no formal conclusions as to how she died has been reached.
Other law enforcement sources with knowledge of the investigation have also said officials are still working the case and are not sure when it will be completed. The case is being investigated by both the Police Department and Los Angeles County coroner’s office, which is conducting toxicology tests.
Officials have said they don’t believe foul play is involved, but the sources said investigators cannot pronounce a cause of death until all toxicology tests are back and detectives have concluded all interviews.
Investigators have served subpoenas on doctors and pharmacies as they try to determine whether prescription drugs played a role in her death.
Authorities collected several bottles of prescription drugs from Houston’s suite at the Beverly Hilton Hotel, where she was found dead Feb. 11. But officials have said the amounts of drugs did not seem unusually large, leaving it unclear whether the medications had anything to do with the singer’s death.
Houston was found in a bathtub at the hotel a day before the Grammy Awards.
The death certificate, released this month, states that the manner of death was “pending investigation.”
