Sean Benschop, 42, who also goes by the name Kary Roberts, was allegedly high while operating demolition equipment when a downtown building collapsed and killed six people, will be charged with involuntary manslaughter, a top city official said Friday, June 7, 2013. (Associated Press)

Sean Benschop, 42, who also goes by the name Kary Roberts, was allegedly high while operating demolition equipment when a downtown building collapsed and killed six people, will be charged with involuntary manslaughter, a top city official said Friday, June 7, 2013. (Associated Press)