TIBURON, Calif. – Oscar winner, career comedian and actor Robin Williams was found dead Monday in a suspected suicide at his home in Tiburon, California, according to the Marin County Sheriff’s Office.
Deputies said Williams was found at about 11:55 a.m., unconscious and not breathing. He was 63.
“He has been battling severe depression of late," Williams' publicist Mara Buxbaum told The Hollywood Reporter. "This is a tragic and sudden loss. The family respectfully asks for their privacy as they grieve during this very difficult time.”
The sheriff’s office, along with the Tiburon Fire Department and Southern Marin Fire Protection District, arrived at his home at noon. He was pronounced dead at 12:02 p.m.
An investigation into the cause, manner and circumstances of Williams' death is currently underway by the Investigations and Coroner Divisions of the sheriff’s office.
Williams is the father of three children and has been married three times. His current wife last saw him alive around 10 p.m. Sunday, according to the Marin County Sheriff's Office.
He was found Monday morning just before a 911 call was made to Marin County Communications.
"I lost my husband and my best friend, while the world lost one of its most beloved artists and beautiful human beings," Williams' wife, Susan Schneider, said. "I am utterly heartbroken."
At this time, investigators said they suspect his death was a suicide due to asphyxia. A comprehensive investigation must be completed before a final determination is made, officials said.
A forensic examination is currently scheduled for Tuesday, and toxicology testing will be done shortly after.
WATCH the video player above to see folks in Cincinnati share their thoughts on Williams' death, their favorite movies and the impact he had on so many lives.
The Chicago-born actor was the great-great grandson of Mississippi Gov. and Sen. Anselm. J. McLaurin. He studied theater at the Juilliard School and then worked in nightclubs where he was discovered for the role of Mork on an episode of "Happy Days" in 1974. The spin-off "Mork & Mindy" was wildly popular, according to the website IMDb.
Williams won an Oscar for his supporting role in "Good Will Hunting" in 1998.
In the film, Williams describes the memorable walk-off home run by Carlton Fisk at Fenway Park in the 1975 World Series. The homer forced a Game 7 between the Boston Red Sox and the Cincinnati Reds, which the Reds went on to win.
Also a four-time Oscar nominee, Williams was known for his quirky, off-beat, but wildly funny characters played with passion and complete immersion into the character.
He also won three Golden Globes, for "Good Morning, Vietnam," "Mrs. Doubtfire" and "The Fisher King."
His other film credits included Robert Altman's "Popeye" (a box office bomb), Paul Mazursky's "Moscow on the Hudson," Steven Spielberg's "Hook" and Woody Allen's "Deconstructing Harry." On stage, Williams joined fellow comedian Steve Martin in a 1988 Broadway revival of "Waiting for Godot."
But Williams wasn't all slapstick and zaniness. He often played serious characters who tackled serious subjects. In the movie "Dead Poet's Society," he played a prep school teacher who was an inspiration to students while being a thorn in the side of administrators. He also showed his serious side in "What Dreams May Come," "Awakenings," "One Hour Photo," "Insomnia," and "The Fisher King." Williams also played a doctor that treated patients illegally, with humor, after checking himself in to a mental institution in the book-adapted screenplay "Path Adams." In the movie, Williams' character says that death should be treated with dignity and humor.
His voice was also a star. He voiced many films, including movies "FernGully: The Last Rainforest" and Genie in "Aladdin."
Williams' personal life was often short on laughter, however. He had acknowledged drug and alcohol problems in the 1970s and `80s and was among the last to see John Belushi before the "Saturday Night Live" star died of a drug overdose in 1982.
Williams announced in recent years that he was again drinking but rebounded well enough to joke about it during his recent tour. "I went to rehab in wine country," he said, "to keep my options open."
Williams' representative told the Huffington Post on July 1 that he had checked into rehab for continued sobriety.
"On behalf of Robin's family, we are asking for privacy during our time of profound grief," Schneider said after news of Williams' death broke. "As he is remembered, it is our hope the focus will not be on Robin's death, but on the countless moments of joy and laughter he gave to millions.”
Thousands flooded his Facebook and Twitter page Monday, leaving messages and condolences for his death.
RIP Robin Williams. You will be missed. Merica. pic.twitter.com/EHUskmr6Yl— Cloyd Rivers (@CloydRivers) August 11, 2014
I could not be more stunned by the loss of Robin Williams, mensch, great talent, acting partner, genuine soul.— Steve Martin (@SteveMartinToGo) August 11, 2014
Williams' last Instagram post was on July 31, and showed an old photo of the star with his daughter Zelda Rae Williams. It was shared 22,000 times by Monday night.
If you or someone you know is battling severe depression or thoughts of suicide, you can call the Crisis Care Center in Cincinnati at (513) 281-2273 or CLICK HERE.
The Associated Press contributed to this report.