Cocaine, Heart Disease to Blame in Whitney Houston's Death: Coroner

Legendary singer Whitney Houston died of an accidental drowning partially to blame on heart disease, cocaine and metabolites, according to the Los Angeles County Coroner.

The coroner's office released its report Thursday afternoon, calling the 48-year-old's death accidental in nature.

Houston was found dead by a member of her entourage on Feb. 11 in a bathtub at the Beverly Hilton Hotel.

In addition to cocaine and metabolites found in the singer's system, the coroner also identified traces of marijuana, Xanax, Flexeril and Benadryl, although they did not contribute to her death, according to the report.

After Houston's death, investigators issued subpoenas for records of her medical prescriptions, apparently pursuing the possibility that prescription abuse was a factor in her sudden death.

Prescription bottles were found in Houston's room at the Beverly Hilton hotel, investigators said. However, after weeks of rigorous lab work, the coroner's report indicates that prescription drugs do not appear to have played a significant role in the singer's death.

On the day of her death, Houston had planned on attending Clive Davis' annual pre-Grammy party later that day. Her daughter, Bobbi Kristina, was at the hotel at the time of Houston's death.

A final report is expected to be released within the next two weeks.