LOS ANGELES (AP) -- Beverly Hills police say Whitney Houston was under water and apparently unconscious when she was found in a hotel bathtub.
Lt. Mark Rosen said Monday that the singer was found Saturday by a member of her personal staff at approximately 3:30 pm. Rosen says Houston was pulled from the tub by members of her staff, and hotel security was promptly notified.
Rosen says further details of Houston's death are not being released to preserve the integrity of the investigation. The coroner's office says toxicology testing is continuing.
A member of Houston's entourage found the 48-year-old singer unresponsive in her hotel room at the Beverly Hilton Hotel on Saturday, just hours before she was supposed to appear at a pre-Grammy gala.
The Grammys themselves were in part a memorial to Houston, a six-time winner. LL Cool J introduced a clip near the start of the show of a glowing Houston singing her signature ballad, a cover of Dolly Parton's "I Will Always Love You."
Bonnie Raitt and Stevie Wonder were among other performers who praised Houston and Jennifer Hudson capped the tributes with an emotional version of "I Will Always Love You" that ended with a personal note: "Whitney, we love you." Houston's most famous song was the most downloaded single for much of Sunday on iTunes.
Meanwhile, Houston's daughter was transported by ambulance to a Los Angeles hospital Sunday morning and later released. A source close to the family who did not want to speak given the sensitivity of the matter said she was treated and released for stress and anxiety. Bobbi Kristina Brown, 18, who is Houston's daughter from her marriage to singer Bobby Brown, had accompanied her mother to several pre-Grammy Awards events last week.
"At this time, we ask for privacy, especially for my daughter, Bobbi Kristina," Bobby Brown wrote in a statement released about an hour after she was transported from the hotel. "I appreciate all of the condolences that have been directed towards my family and I at this most difficult time."
A sensation from her very first album, Houston was one of the world's best-selling artists from the mid-1980s to the late 1990s. She awed millions with soaring, but disciplined vocals rooted in gospel and polished for the masses, a bridge between the earthy passion of her godmother, Aretha Franklin, and the bouncy pop of her cousin, Dionne Warwick.
Her success carried her beyond music to movies, where she became a rare black actress with box office appeal, starring in such hits as "The Bodyguard" and "Waiting to Exhale."
Bishop T.D. Jakes, a Texas minister and producer on Houston's final film project, a re-make of the 1970s release "Sparkle," said he saw no signs she was having any substance issues. He said Houston was a complete professional and moved the cast and crew to tears two months ago when she sang the gospel hymn "Her Eyes on the Sparrow" for a scene shot in Detroit.
"There was no evidence in working with her on `Sparkle' that there was any struggle in her life," Jakes said Sunday. "She just left a deep impression on everybody."