Whitney Houston's body was moved Sunday morning from the Beverly Hilton hotel to the L.A. County morgue, where an autopsy will be performed.
Video showed a coroner's van pulling out of the hotel, where Houston was pronounced dead at 3:55 p.m. Saturday.
Authorities said they don't know how Houston, 48, died but said foul play does not appear to be involved.
"There were no obvious signs of criminal intent," Beverly Hills Police Lt. Mark Rosen said, adding it's unclear whether she died from natural causes or something else.
Paramedics performed CPR for about 20 minutes before the pop star was declared dead.
The Beverly Hills Fire Department said it was called to the hotel about 3:30 p.m. and Houston was pronounced dead at 3:55 p.m.
Houston was in the Los Angeles area for a musical tribute for music executive Clive Davis and had performed earlier this week.
Houston was planning to attend Davis’ annual pre-Grammy party Saturday at the Beverly Hilton.
Earlier this week, the 79-year-old Davis perused page after page of guest lists in a bungalow at the Beverly Hills Hotel, where he conducts business when he’s in the Los Angeles area.
Among those Houston was expected to rub elbows with were Quincy Jones, Tony Bennett, Akon, Cee Lo Green, Miley Cyrus, Sean "Puffy" Combs, Jennifer Hudson, Jackson Browne, Elvis Costello and Diana Krall.
"It’s a great time where everybody can set down their swords, so to speak," Davis said, seated on an overstuffed divan next to a coffee table cluttered with papers, CDs and videos. "I was grateful that, inviting them to my home, that they would feel comfortable and just keep coming back, and they've kept coming back every year to where it's expanded to be this incredible haven for musicians."
Houston had drug and alcohol problems for years, and in May her spokeswoman said she was going back to rehab.
Publicist Kristen Foster told the Associated Press on Saturday that Houston had died but did not provide further details.
Houston was known for such hits as "How Will I Know," "Saving All My Love for You" and "I Will Always Love You." She also starred in movies such as "The Bodyguard."