Rest in Eternal Peace Whitney Houston

Whitney Houston "partied heavily" at the Beverly Hilton hotel with a group of friends ... hotel staff says.We're told Whitney and her friends were in the bar for a time and the group was drinking and very loud. Our sources say even though the hotel is busy with all the Grammy festivities, Whitney and her group stood out because they were so boisterous. Again, it's too early to know what caused her death.Houston was found dead today at the Beverly Hilton. She was 48.No illegal drugs have been found in the hotel room where Whitney Houston died -- at least not yet -- but prescription drugs were present, and it's possible the singer drowned in the bathtub .... Sources tell us ... when EMTs arrived Whitney's body was already removed from the bathtub so it will take an autopsy to determine if she OD'd, drowned or died from some other cause.Informed sources tell us ... Beverly Hills cops -- who were still searching the room at the time this story was posted -- found various pill bottles. There was no evidence that Whitney was drinking alcohol in the room.Whitney's body was just removed from the room on a gurney.  It will go to the morgue for an autopsy to determine cause of death.Whitney Houston's daughter Bobbi Kristina got into an angry shouting match with police officers outside the hotel room where her mother was found dead ..According to law enforcement sources ... Bobbi Kristina showed up on the 4th floor of the Beverly Hilton several hours after Whitney's death. We're told when officers informed her no one was allowed to see the body -- Bobby kristina screamed, cursed and demanded to see her mother.Ultimately, she was not allowed into the room and left. We're told Whitney's cousin Dionne Warwick also showed up later. She too was turned away by officers.As we reported earlier ... other family members and friends -- who were in the room when authorities arrived -- identified Whitney's body.Beverly Hilton hotel employees reveal. Whitney Houston was found dead in the bathtub of her room. a member of Whitney's entourage discovered her unresponsive and called hotel security, who then called 911. police arrived to the scene within minutes and fire was already there on an unrelated call. Paramedics performed CPR, but it did not work and she was pronounced dead at 3:55 PM. Our sources say there were no obvious signs of foul play, but BH PD detectives have begun a full in investigation.