Hawthorne Heights News

The 25-year-old was discovered dead on the band's tour bus hours before a scheduled show in Washington D.C. on Saturday (November 24). As yet, the cause of death has yet to be determined.

The band posted the following message 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 soundcheck. 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. Please, out of respect to Casey and his family, don't contribute or succumb to any gossip you may hear. We don't want his memory to be tainted in the least. Casey was our best friend. He was quirky and awesome and there will truly be no others like him! His loss is unexplainable. As soon as we know more we will let you know."

The band was on tour with Escape The Fate, Amber Pacific, the Akas, and the Secret Handshake, and had played just one show on the tour, the previous night (November 23) in Detroit.

For more music news, check out NME.com.