Video: 'Whitney Houston death announcement CNN'

(Saturday, February 11, 2012, Houston was pronounced dead at 3:55 p.m. PST) — Whitney Houston, who ruled as pop music’s queen until her majestic voice and regal image were ravaged by drug use, erratic behavior and a tumultuous marriage, was found dead this afternoon in a Beverly Hills hotel room. She was 48.

Houston was found unconscious in Suite 434 at the Beverly Hilton Hotel, submerged in the bathtub. Beverly Hills paramedics arrived at approximately 3:30 p.m. PST, found Houston unresponsive and performed CPR. Houston was pronounced dead at 3:55 p.m. PST.

Houston was in Los Angeles for the annual pre-Grammy concert and dinner of her longtime mentor, Clive Davis, which went on as scheduled tonight, although it was quickly turned into a tribute to Houston.

Video: 'Whitney Houston Biography: Life and Career of the Singer and Actress'

The cause of death was not immediately known; local police said there were “no obvious signs of criminal intent.”

On Mar. 22, 2012, the Los Angeles County Coroner’s Office reported that Houston’s death was caused by drowning and the “effects of atherosclerotic heart disease and cocaine use.” The office stated the amount of cocaine found in Houston’s body indicated that she used the substance shortly before her death.

Toxicology results revealed additional drugs in her system: diphenhydramine (Benadryl), alprazolam (Xanax), cannabis and cyclobenzaprine (Flexeril). The manner of death was listed as an “accident.”