Whitney Houston Drowned in Tub?

Autopsy regarding Whitney Houston's death is complete although results of the actual cause of her death is not yet released pending toxicology report, according to TMZ.

Whitney Houston, disheveled, in her photo taken during the banquet for Grammy Awards.

Sources revealed that cause of death cannot be determined until the toxicology results, which usually takes 4-6 weeks.

As TMZ first reported, “Although the cause of death is unknown, it is increasingly looking like Whitney may have fallen asleep or lapsed into unconsciousness in the bathtub and drowned.”

Informants for TMZ told that Whitney “had been drinking the night before and authorities believe a combination of Xanax and alcohol could have fatally sedated her,” although it is too unsure to draw any firm conclusions surrounding the singer's death.