Robin Williams' final post on social media was about his daughter

MARIN COUNTY, Calif. (WITI) -- Robin Williams' last message on social media was posted on July 31st, about two weeks before his death. The post was a "throwback Thursday" photograph of his daughter.

“Happy Birthday to Ms. Zelda Rae Williams! Quarter of a century old today but always my baby girl. Happy Birthday @zeldawilliams Love you!” he wrote.

Williams was found dead Monday, August 11th. At this time, the Sheriff’s Office Coroner Division suspects the death to be a suicide due to asphyxia.