Absolutepunk is reporting that Casey Calvert, guitarist and backing vocalist for post-hardcore/emo band Hawthorne Heights, passed away this past Friday of as-of-yet unknown causes. The shocking news came to light just before the band did sound-check for a now canceled show. While no details have been released, the band did issue an official statement on their website;

“Today is probably the worst day ever. Its with our deepest regrets that we have to write this. Casey Calvert passed away in his sleep last night. We found out this afternoon before sound-check. We’ve spent the entire day trying to come to grips with this and figure out as much as possible. At this time we’re not sure what exactly happened. Just last night he was joking around with everyone before he went to bed. We can say with absolute certainty that he was not doing anything illegal.”

The band have been embroiled in recent legal troubles, both with their ex-label Victory Records, and most recently, their former management company. Hawthorne Heights rose to prominence with the release of their platinum-selling debut album The Silence In Black And White. Our condolences to the Calvert family, the band, and all those involved.