Stryper guitarist Oz Fox suffered a seizure and fell during a performance Saturday night, Aug. 11 at Harrah’s Las Vegas while playing with his side project, Sin City Sinners. According to a statement from Stryper doctors are focusing on “an area of concern” on Fox’s brain which they will run a biopsy on. The band will continue touring as a trio until the guitarist returns and they’re anticipating he’ll make a “full recovery.” Stryper are scheduled to begin their tour of Australia this Friday, August 17 in support of their new record, God Damn Evil. The band then heads to Tokyo, Japan before returning to the States in September. The full list of dates can be found here.