The L.A. County Coroner's office issued a toxicology report Thursday that said the official cause of Whitney Houston's death was "drowning and effects of atherosclerotic heart disease and cocaine use," the Washington Post reported.
Houston, 48, was "found submerged in bathtub filled with water" and "no trauma or foul play is suspected," the coroner said.
The toxicology tests also found other drugs in her body, including marijuana, the anti-anxiety drug Xanax, the muscle relaxant Flexeril and the allergy medicine Benadryl, but these drugs "did not contribute to the death," CNN reported.
According to CNN, the final coroner report is expected to be made public within two weeks.
Houston died in her room at the Beverly Hilton Hotel in Beverly Hills, California, on February 11, the day before the music industry gathered for the annual Grammy Awards in Los Angeles.