(THE SUN) — Whitney Houston’s doctors will be quizzed to see if she illegally obtained a collection of prescription pills that may have killed her.

The star could have been dead before she became submerged in the LA hotel bath where her body was discovered, it was reported last night.

It is feared the tragic singer may have been killed by a cocktail of prescription drugs and alcohol rather than drowning.

The Bodyguard star was found in the bath of her Beverly Hilton hotel room on Saturday with her face underwater.

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