Today, Anthrax announces that, due to personal reasons, bassist Frank Bello will not be able to accompany the band on its upcoming South American tour, set to kick off April 13 at MXMF the Metal Fest. Filling in on those dates, as well as two U.S. festival shows in May, will be Anthrax founding member and original bassist Dan Lilker, marking his first appearance with the band in 40 years. Lilker, who co-wrote and played on Anthrax’s debut album Fistful of Metal, was also a member of Stormtroopers of Death with Charlie Benante and Scott Ian.