The L.A. County Coroner’s office has revealed details to Whitney Houston’s family about the cause of death of the iconic songstress, who was found unresponsive in a Beverly Hills Hotel on Saturday.

Original reports were that the singer had been found in a suite on the 4th floor of the hotel, unconscious in a bathtub, with her head under? water but new details reveal that the singer did not die from drowning, but rather from what appears to be a deadly concoction of prescription drugs and alcohol.

Details…

Houston’s autopsy was completed Sunday, and while the coroner is not officially saying what killed the six-time Grammy winner, family members have revealed details to the media.

According to TMZ, Coroner’s officials informed the family there was not enough water in Whitney’s lungs to lead to the conclusion that she drowned and that she may well have died well before her head became submerged.

Family sources say the autopsy revealed Whitney’s death was caused by a mixture of Xanax and other prescription drugs mixed with alcohol .

Mary Jones, Houston’s aunt, discovered Whitney’s body in the bathtub. Mary had laid out Whitney’s dress for the evening on the bed and then left for about a half hour. When Whitney didn’t come out of the bathroom, Mary entered, pulled Whitney out of the tub and began administering CPR.

Beverly Hills Police Lt. Mark Rosen said that his agency may release more details Monday about Houston’s death, but it will depend on whether detectives feel comfortable releasing any information.

Law enforcement sources told CBS News that while there were no illegal substances found in Houston’s hotel room, but there were prescription drugs. Authorities said the most likely theories for Houston’s death are that she died of a heart attack or a prescription drug overdose.

The family was told the Coroner has no problem releasing the body because there is no evidence of foul play and unless cops put a hold on the body, it can be flown back East.

Whitney’s mother has reportedly arranged to have the singer’s body flown back to Atlanta, as early as tomorrow where she will be laid to rest.

R.I.P. Whitney Houston

**UPDATE 2/13/12 3:30pm**

According to the AJC, Houston’s body will be transported to New Jersey (Not Atlanta) via Tyler Perry’s private jet.

Whitney Houston?s body will be flown to her native New Jersey, according to a number of recent bulletins, although numerous earlier reports indicated the singer?s remains would be transported for burial in Atlanta.

TMZ has just reported that her remains will be flown east on Tyler Perry?s private plane:

?Sources tell TMZ, Tyler Perry rushed to the L.A. hospital Saturday as soon as he heard about Whitney?s death, and immediately offered up his private plane to the family.? (MORE)