Robin Williams' ashes scattered in San Francisco Bay

Robin Williams’ cremated remains were scattered on 12 August, the day after his death.

Robin Williams’ cremated remains were scattered on 12 August, the day after his death. Picture: Official Robin Williams Facebook page.

LOS ANGELES - Comedian Robin Williams' ashes have been scattered in the San Francisco Bay following his apparent suicide, according to a death certificate released by Marin County on Thursday.

Williams, 63, was found hanged in his Tiburon, California.

The Mrs. Doubtfire star had been suffering from severe depression, anxiety and early Parkinson's disease before his death.

Williams' cremated remains were scattered on 12 August, the day after his death, according to the document.

Williams' death stunned his former Hollywood colleagues, who remembered him for his generosity and humble nature.

The actor's madcap comic style launched him to prominence as a friendly alien in the late 1970s TV series Mork & Mindy, and his dramatic versatility also earned him an Oscar for his role as a fatherly therapist in 1997's Good Will Hunting.

Williams' family has not announced plans for a memorial.

Fellow comedian Billy Crystal will give a tribute to Williams at the annual television Emmy Awards on 25 August.

Williams was suffering from the early stages of Parkinson's disease along with severe depression at the time of his apparent suicide, his widow said on Thursday, drawing public attention to the correlation between the diseases.

Although the gifted comedian had spoken before about his depression, Parkinson's experts have noted how the incurable and debilitating nervous system disorder that causes tremors and slowness of movement also affects people emotionally.