Prescription drugs were present at the scene of Whitney Houston's tragic death, and it's possible the star drowned in the bathtub, according to reports.
No illegal drugs have been found in the hotel room where a member of the legendary singer's entourage found Whitney Houston dead on Saturday.
When EMTs arrived, Whitney's body was already removed from the bathtub.
It will take an autopsy to determine if she overdosed, drowned or died from some other cause. The medical examination is scheduled to take place imminently.
Beverly Hills police officers found various pill bottles in Houston's room at the Beverly Hills Hilton Hotel, where she died yesterday at the age of 48.
There was no evidence that Whitney was drinking alcohol in the room.
Houston's body was removed from the room on a gurney and sent to the morgue for an autopsy to determine the official medical cause of death.
Paramedics performed CPR on the singer when alerted to her unresponsiveness but it did not work. She was pronounced dead at 3:55 p.m.
Our sources say there were no obvious signs of foul play, but a full investigation is ongoing. Whitney's body was ID'ed by family and friends.