Actor/comedian Robin Williams is dead in an apparent suicide

http://twitter.com/#!/ChrisMegerian/status/498965092071772160

Developing.

Update:

Fans, including celebs and journalists, have begun tweeting their condolences.

http://twitter.com/#!/dianafalzone/status/498967985235959808
http://twitter.com/#!/AlyssCampanella/status/498968260134842369
http://twitter.com/#!/film_girl/status/498968251318423552
http://twitter.com/#!/gerardway/status/498968495279714305
http://twitter.com/#!/JohnStamos/status/498970521661632513
http://twitter.com/#!/marthamaccallum/status/498966773484769280
http://twitter.com/#!/katyperry/status/498970894610362368
http://twitter.com/#!/TheRealMarilu/status/498971873045381120
http://twitter.com/#!/cher/status/498972592850477056
http://twitter.com/#!/GloriaEstefan/status/498973037610692608
http://twitter.com/#!/edwardjolmos/status/498973085249572865
http://twitter.com/#!/Barbara_Eden/status/498973108930621440

https://twitter.com/ArianaGrande/status/498974282706198528

http://twitter.com/#!/kelly_clarkson/status/498975865838247936
http://twitter.com/#!/Pink/status/498970894250037248

Update:

TMZ reported last month that Williams was in rehab for alcohol abuse at at Hazelden Addiction Treatment Center near Lindstrom, Minnesota.

Update:

His last tweet was a birthday shout-out to his daughter, Zelda:

http://twitter.com/#!/robinwilliams/status/494989879340584960

Update:

Williams’ death and apparent suicide have now been confirmed by numerous mainstream media outlets. We have revised our headline accordingly. (The original headline said he was “reportedly” dead.)