The Marin County Sheriff's Office is investigating the death of actor/comedian Robin Williams in Tiburon, Calif., north of San Francisco.
According to a press release issued by the coroner's division of the sheriff's office, Williams was found unconscious and not breathing inside his home in Tiburon around noon local time, and was pronounced dead shortly after.
The press release identified him by his full name, Robin McLaurin Williams, 63.
The coroner suspects the death was "a suicide due to asphyxia, but a comprehensive investigation must be completed before a final determination is made." A forensic examination is currently scheduled for Tuesday, the press release said.
Williams' rep confirmed the death to USA TODAY, E News, Entertainment Weeklyand others.
"Robin Williams passed away this morning," said Mara Buxbaum, president of his PR firm. "He has been battling severe depression of late. This is a tragic and sudden loss. The family respectfully asks for their privacy as they grieve during this very difficult time."
His wife, Susan Schneider, issued a brief statement: "This morning, I lost my husband and my best friend, while the world lost one of its most beloved artists and beautiful human beings. I am utterly heartbroken," she said.
The news of his death sent shock waves through Hollywood, and prompted an outpouring of grieving tweets, including from the Sesame Street gang. "We mourn the loss of our friend Robin Williams, who always made us laugh and smile," their tweet read.
Williams' last tweet and Instagram was on July 31, when he wished his daughter, Zelda Rae, a happy 25th birthday and posted a picture of himself with her. "Quarter of a century old today but always my baby girl," he captioned the photo.
Williams will reprise his role as Theodore Roosevelt in the third Night at the Museum film. Fox issued a statement, according to EW.
"There really are no words to describe the loss of Robin Williams. He was immensely talented, a cherished member of our community, and part of the Fox family. Our hearts go out to his family, friends and fans. He will be deeply missed."
Williams, who won an Oscar for his supporting role in Good Will Hunting, also recently signed on to reprise his beloved role as Mrs. Doubtfire in a sequel to be directed by Chris Columbus, according to EW.