Statemen di website Avenged Sevenfold mengatakan,'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'.
Salah seorang fans berkata, riwayat penggunaan obat-obatan kemungkinan besar adalah penyebab kematiannya.
Update: Baca juga, penyebab kematian Jimmy Sullivan.