This time it appears to not be a hoax...
http://news.kron4.com/news/breaking-actor-comedian-robin-williams-found-dead/
The Marin County Sheriff?s Office said that Williams was found unconscious Monday afternoon at about 12:00 p.m. inside his residence in unincorporated Tiburon.
An investigation into the cause, manner, and circumstances of the death is currently underway by the Investigations and Coroner Divisions of the Sheriff?s Office, officials said.
Investigators said that Williams was last seen alive at his residence, where he resides with his wife, at approximately 10:00 pm on Sunday.
Coroner Division suspects the death to be 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 August 12, 2014 with subsequent toxicology testing to be conducted.
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and:
http://www.businessinsider.com/actor-robin-williams-found-dead-in-his-home-2014-8
~~~
and:
http://sanfrancisco.cbslocal.com/2014/08/11/robin-williams-found-dead-in-tiburon-home-of-apparent-suicide/