Oscar-winner Robin Williams, whose free-form comedy and adept impressions dazzled audiences for decades, has died in an apparent suicide. He was 63.
The Marin County Sheriff's Office says Williams was pronounced dead at his home in California on Monday.
The sheriff's office says a preliminary investigation shows the cause of death to be a suicide due to asphyxia.
Williams shot to fame in the late '70s as the alien in TV's "Mork and Mindy."
He conquered the big screen in comic films such as "Good Morning, Vietnam" and "Mrs. Doubtfire." But he won his Academy Award in a serious role -- as the therapist in "Good Will Hunting."
His performing style was at its purest in his standup act, as he impersonated a Russian immigrant or parodied anyone from John Wayne to Keith Richards.
Williams is set to appear as Theodore Roosevelt in the third installment of "Night at the Museum" in December. He had also recently signed on to star in a sequel to "Mrs. Doubtfire."
In July, Williams checked into a rehab facility. For years, Williams was open about his addiction problems with drugs and alcohol.
A rep issued a statement saying, "Robin Williams passed away this morning. 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."
See the official press release from the Marin County Coroner's Office, here.
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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