The singer did not have enough water in her lungs to have drowned, Los Angeles County Coroner's Office officials told the 48-year-old superstar's relatives, TMZ reported.

Houston took a combination of Xanax and other prescription drugs with alcohol, and she could have passed away before her head became submerged in the bathtub water.

The singer's official autopsy results have not yet been released, and several reports stating that she drowned were not confirmed by the coroner's office -- which said it may take up to eight weeks for the official cause of death to be released.

"There will be no cause of death at this time, as it is awaiting toxicology," Los Angeles deputy coroner Ed Winter said Sunday at a news conference. "I know there were reports of did she drown or was it an overdose, but I will not be commenting on that."

The star's mother, Cissy Houston, arranged to have her daughter's body flown back to Atlanta -- where the singer spent many of her latter years -- as early as Tuesday.

Winter reportedly told Houston's family that releasing the body was not an issue because there was no evidence of foul play in the singer's death.

"We are devastated by the loss of our beloved Whitney," Houston's family said in a statement through the singer's publicist, thanking fans for their outpouring of support. "This is an unimaginable tragedy, and we will miss her terribly."

Houston's death comes after widespread reports of boozing and erratic behavior in the week leading up to the Grammys.

FoxNews.com learned that Houston was a mess when she showed up to Hollywood hotspot Playhouse on Feb. 2 around 10.30pm to support her on again/off again boyfriend Ray J, who took over the turntables as guest DJ.

"She was a total wreck. She drank cognac and champagne, and seemed completely out of it from the moment she arrived until the moment she left," an insider told FoxNews.com. "Yet at the same time she seemed like she was enjoying herself with her friends. She went to the smoking patio a few times throughout the night and was also seen roaming around throughout the club and even ventured walking upstairs to the smaller room."

Source: FOX News

Newscore contributed to this report.

Whitney Houston died from a combination of Xanax and other prescription drugs mixed with alcohol, TMZ is reporting. The celebrity website cited family sources who were briefed by the L.A. County Coroner officials.