The L.A County Coroner’s office has found no evidence that heiress Casey Johnson committed suicide, according to law enforcement officers.

Casey, who died this week aged 30, also had no evidence of heart disease, liver, kidney, vascular or other obvious physical problems, reports TMZ.

The Web sites says the doctor who performed the autopsy concluded there were “no anatomical findings” — which means there is nothing immediately obvious to indicate the cause of her untimely death.

Law enforcement officers tell TMZ there was “an insignificant” amount of prescription medication found in the home where she died.

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