From Wikipedia:
On June 25, 2007, Benoit and his family were found dead in their home in Atlanta. It was first reported to fans of the WWE via WWE Mobile. No exact details are known about this death at this time. Through their website, World Wrestling Entertainment also released the following statement:
"World Wrestling Entertainment is deeply saddened to report that today Chris Benoit and his family were found dead in their home. There are no further details at this time, other than the Benoit family residence is currently being investigated by local authorities.
Monday Night's Raw on the 26th of June, 2007, will serve as a tribute to Chris Benoit and his family."
PW Headlines stated that Benoit called in to WWE Sunday and said he would be unable to make it back as his family was ill and they were spitting up blood
Fayette County and Peachtree City authorities have not confirmed Benoit's death.