He was 60 years old.
"(J. Michael) Straczynski updated his Facebook Fan Page on Friday, September 28th, 2012 to say: I regret that I must convey the sad news that Michael O'Hare passed away today. He suffered a heart attack on Sunday and was in a coma until his passing this afternoon. This is a terrible loss for all B5 fans and everyone involved with the show wishes to convey their condolences to the O'Hare family. He was an amazing man. "
Michael will be known to many Sci-Fi fans for his fantastic portrayal of Commander Jeffrey SInclair in Babylon 5 and subsequently as Valen.
Edited by Still Waters, 11 October 2012 - 02:35 PM.
Removed copyrighted image & added news source link