Avenged Sevenfold drummer, James Owen Sullivan, was found dead at his Huntinton Beach, California home.
Police have launched an investigation into The Rev's death but reports state that he died of natural causes.
The remaining members of the band posted their statement today to fans via their myspace: "It is with great sadness and heavy hearts that we tell you of the passing today of Jimmy “The Rev” Sullivan.
Jimmy was not only one of the world's best drummers, but more importantly he was our best friend and brother. Our thoughts and prayers go out to Jimmy's family and we hope that you will respect their privacy during this difficult time".
Avenged Sevenfold has released four albums since 1999 and had been working on their fifth studio album.