Former Dream Theater and Avenged Sevenfold star Mike Portnoy has quit as the drummer of Adrenaline Mob.

The rocker will depart the band, which also features Disturbed bassist John Moyer, following four upcoming Latin America shows as support to Halestorm.

He states, "I have scheduling conflicts that prevent me from being able to fully commit to the band's future activities at the moment. As I cannot be in two places at the same time, I don't want to hold them back and have to wait for my schedule to re-open up to resume activity."

He adds, "I'm very proud of what we started together and the music we made over the past two years and I wish the guys all the best in the future."