Avenged Sevenfold's James Owen Sullivan, nicknamed "The Rev," has died. He was 28. The drummer passed Monday at his home in in Southern California from what Huntington Beach police are calling natural causes. The Orange County coroner's office is currently investigating the death.

On the band's website they commented, "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 deepest condolences go out to James' family and friends.