(AP Photo/Damian Dovarganes)
(CNN) The cause of singer Whitney Houston's death was drowning and the "effects of atherosclerotic heart disease and cocaine use," the Los Angeles County coroner's office said Thursday.
She was found dead last month in the bathtub of her hotel room in Beverly Hills, California.
The manner of death was listed as an "accident."
Cocaine and metabolites were identified and contributory to her death, the report said.
Other drugs identified in Houston's body were marijuana, alprazolam (Xanax), cyclobenzaprine (Flexeril) and diphenhydramine (Benadryl), but they "did not contribute to the death," the report said. Flexeril is a muscle relaxant, and Benadryl is an allergy medicine.
No trauma or foul play is suspected, the report said. The final coroner's report will be available within two weeks, the coroner's office said.
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