Robin Williams died by suicide on August 11, 2014, at his home in Tiburon, California. He hanged himself using a belt that was wrapped around his neck and wedged between a closet door and the door frame. He was found in a seated position with the belt around his throat, causing death by asphyxiation. Authorities also found superficial cuts on his left wrist and a pocket knife nearby, indicating he had apparently tried to slash his wrist before hanging himself

. Williams had been suffering from severe depression, anxiety, and had recently been diagnosed with Parkinson's disease and diffuse Lewy body dementia, a neurological condition that contributed to his mental health struggles. The presence of Lewy body dementia was considered a critical factor leading to his suicide, as it caused symptoms such as paranoia, hallucinations, and worsening depression

. No alcohol or illegal drugs were involved in his death, and prescription medications found in his system were at therapeutic levels, indicating he did not overdose intentionally

. Despite his struggles, Williams had not expressed suicidal thoughts openly to those around him before his death