(CNN) -- As the music industry prepared to pay tribute to Whitney Houston at the Grammy Awards Sunday night, the world awaited answers about the last moments of the pop superstar's life.
Houston, whose soaring voice and enormous talent were overshadowed in recent years by her battles with drug addiction, was found dead Saturday in a Beverly Hills, California, hotel, hours before she was to attend a pre-Grammy party hosted by the songstress' longtime mentor, Clive Davis. She was 48.
Amid the outpouring of grief over Houston's death, Beverly Hills police said Sunday that Houston's 18-year-old daughter, Bobbi Kristina, was taken to Los Angeles' Cedars-Sinai Medical Center, at about 11:15 a.m. No further information was immediately available.
Bobbi Kristina Brown was born during Houston's marriage to R&B singer Bobby Brown, which ended in divorce in 2007.
"I am deeply saddened at the passing of my ex-wife," Brown said in a statement. "At this time, we ask for privacy, especially for my daughter, Bobbi Kristina. I appreciate all of the condolences that have been directed toward my family and I at this most difficult time."
Questions persisted about the circumstances surrounding Houston's death. Police and fire officials were called to her room at 3:43 p.m. Saturday after her bodyguard found her unconscious body.
Houston was found in the bathtub of the room, hotel employees and people close to Houston told entertainment news website TMZ. Pill bottles were found at the scene, TMZ reported, citing "informed sources."
The bodyguard attempted CPR on Houston, sources close to her told TMZ.
There were "no obvious signs of criminal intent," said Beverly Hills Police Lt. Mark Rosen. An autopsy could happen as early as Sunday, the Los Angeles coroner said.
CNN could not immediately confirm the TMZ reports Sunday.
Police were tight-lipped about the investigation Sunday, saying no updates would be forthcoming until Monday.
Officers were no longer at the Hilton hotel Sunday, said Beverly Hills watch commander Donald Chase, but would not say whether that meant the on-site investigation was complete.
The hotel in a statement on Sunday extended "profound sympathies" to Houston's family and fans. "We are saddened by her passing and she will be missed by many," it said, adding the hotel is cooperating with authorities.
Houston's battles with drugs had long made headlines, but she was in the midst of a comeback, with a few shows scheduled and a movie in the works.
A music industry executive, who recalled hearing two loud booms from the room below hers -- the room where, she later learned, Houston had died -- said she had seen Houston and Bobbi Kristina swimming in the hotel pool days before.
The two looked happy, she recalled, and Houston seemed healthy and beautiful. However, it remained unknown whether the singer had won her battle with substance abuse for good.
Houston's family said in a statement Sunday, "We are devastated by the loss of our beloved Whitney. This is an unimaginable tragedy and we will miss her terribly. We appreciate the outpouring of love and support from her fans and friends."
On Sunday, 19 Whitney Houston songs appeared in iTunes' top 100 song sales chart. Her "Whitney - The Greatest Hits" album was No. 1 on the iTunes album chart.
CNN's Denise Quan, Casey Wian, Jessica Thill, Holly Yan, Poppy Harlow and Deb Feyerick contributed to this report.
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