In June, the Los Angeles County coroner?s office reported Friday that Fisher?s death was due to a combination of factors including sleep apnea and ?other conditions: atherosclerotic heart disease, drug use.? While Fisher was very public about her struggles with mental illness and addiction, the kind of drugs taken and the extent to which they contributed to her death is not known; the coroner?s summary stated, How Injury Occurred: An autopsy report released shortly after the summary indicated that Fisher had cocaine, heroin and ecstasy in her system, although it?s unclear what impact the substances might have had on her death, the Associated Press reported.