Rock drummer Jimmy Sullivan, 'The Rev,' has been found dead at the age of 28.
The Orange County Register reports Sullivan was found unresponsive Monday at his home in Huntington Beach.
Lt. John Domingo of the Huntington Beach Police Department says the death appeared to be from natural causes.
An autopsy is expected to be done today.
Sometimes known as James Owen Sullivan, The Rev was a drummer for Avenged Sevenfold.
The band has posted this Facebook note in response to The Rev's death:
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.
Jimmy you are forever in our hearts.
We love you.
M Shadows, Synyster Gates, Zacky Vengeance and Johnny Christ
The note has received more than 5,000 comments.
More about Sullivan and his music career can be found at the OC Register.
HuffPost Entertainment is your one-stop shop for celebrity news, hilarious late-night bits, industry and awards coverage and more — sent right to your inbox six days a week. Learn more