Northern California Police Office release an autopsy report stating that Robin Williams is negative from drugs and alcohol prior to his death last August.

According to Marin’s county office, Williams intake medications with proper prescriptions but with “therapeutic concentrations”.

The veteran actor death was caused by asphyxia by hanging himself.

Asphyxia is a condition that your body suffers from insufficiency of oxygen that arises from abnormal breathing example of those are choking or by hanging yourself. The certain can lead to coma and death.

Sheriff reports release last August 11 that the actor was found lifeless in his home in Tiburon, officially hanged himself that cause his life.

Sheriff’s Deputy Stewart Cowan as of now this is the only available information to be release to public.

According to Susan Schneider his husband is suffering from a deep depression, anxiety because of being diagnose with Parkinson’s disease, Susan also added that the actor is sober before he ends his life.

Lt. Keith Boyd said that Robin’s spouse was on his house the moment he committed suicide and seen by his wife at the moment she falls asleep.

The next morning the actor’s personal assistant becomes concerned   because he fails to respond upon knocking his door and unfortunately his assistant found the actor dead.

Meanwhile the authority’s investigation about Williams death is still ongoing what is certain that result shows a negative results on Toxicology test.