Robin Williams consumed no alcohol or illegal substances in the moments before he committed suicide, according to the final autopsy report by the Marin County Coroner's office.
The 63-year-old actor-comedian died due to asphyxia and hanging on Aug. 11 at his home in Tiburon, California. Authorities released their findings as a necessary disclosure under the California Public Records Act on Nov. 7.
The report did reveal Williams had antidepressants, caffeine and levodopa in his system. The latter is a prescription drug to combat his recent diagnosis with Parkinson's disease, which his widow Susan Schneider disclosed shortly after his death. She also said he was sober at the time of his death.
The Oscar-winning actor also had a "recent increase in paranoia," according to the report. That may explain why the night before his death, he placed several wristwatches in a sock and gave them to an undisclosed person. He was worried about them and "wanted to keep them safe," according to a witness statement.
Williams' personal assistant found him clothed and dead in his stepson's bedroom, according to Lt. Keith Boyd of the Marin County Sheriff's Office. Williams also had superficial cuts on his wrists and a pocket knife dropped near the body had dry red material, consistent with dried blood, on the blade.
The final autopsy report was delayed twice after it was originally scheduled to be released on Sept. 30.
Williams had four films yet to premiere when he died. He reprised his role as Teddy Roosevelt in "A Night at the Museum: Secret of the Tomb," out on Dec. 19, and stars opposite Joel McHale in "A Merry Friggin' Christmas," out on Dec. 25.
His films "Boulevard" and "Absolutely Anything" will hit theaters next year.
