The alleged incident occurred earlier this week when the band co-headlined New Jersey’s MetLife Stadium with System of A Down
The anonymous band's massive two-hour set marked their first headline slot at a major festival
Will it be rain or shine for Green Day, Sleep Token and KoRn this weekend?
The event returns next month with Green Day, Korn and Sleep Token headlining
The festival returns to Donington Park next month with three first-time headliners in the form of Green Day, Sleep Token and Korn
The collection is part of the musician's Freak On A Leash pet line, named after the track by the metal band
Fellow judges Lionel Richie and Luke Bryan have expressed their surprise at Underwood's metal knowledge
Previous surprise appearances have come from Parkway Drive, Bullet For My Valentine and Metallica
"I shouldn't have announced it. It was my bad. Because I was so excited — I was excited at the time"
A cinema release and live album are both scheduled