An autopsy has confirmed rumors that Hawthorne Heights guitarist Casey Calvert died due to an overdose. Reportedly, it was a mix of the “acute combined effects of opiate, citalopram and clonazepam intoxication,” according to the office of the chief medical examiner in Washington, D.C.http://www.mtv.com/news/articles/1576570/20071217/hawthorne_heights.jhtml