Valla explained in a statement: "After having played as session guitarist with ABBATH since May this year, I have recently decided that it is time for me to leave the band for personal reasons. I thank the guys for bringing me along on such an awesome ride, and for all the new friends I made in the process. I wish the guys the best of luck in the future."
This comes on the heels of french drummer Kevin "Creature" Foley announcing his departure from ABBATH last week. Foley attributed the split to "personal reasons."
Playing drums for ABBATH on the band's upcoming "Decibel Magazine Tour" will be Gabe Seeber of THE KENNEDY VEIL.
ABBATH's self-titled debut album will be released on January 22, 2016 via Season Of Mist.