February 12, 2012 6:39PM ET

Whitney Houston’s Cause of Death May Have Been Drowning

Houston was reportedly found in the bathtub, underwater

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Whitney Houston performs at the 2009 Grammy Salute To Industry Icons honoring Clive Davis at the Beverly Hilton Hotel.

While the autopsy results have not yet been released, reports are coming out that Whitney Houston may have drowned in her hotel bathtub.

TMZ is reporting that Houston was found in the tub with her face below the water’s surface. Sources said Houston’s hairdresser had gone to check on the singer after becoming concerned that she had been in the bathroom for more than an hour. The body’s position suggested that Houston slid down the back of the tub into the water.

Photos: Whitney Houston Through the Years

One of Houston's bodyguards reportedly pulled Houston out of the tub and attempted CPR before the paramedics arrived. Houston was declared dead at 3:55 p.m.

There are reports that Houston was known to be taking Xanax and other prescription sedatives, which, combined with alcohol, may have caused her to lose consciousness in the bathtub.