Staff Authorities are investigating the shooting death of a 73-year-old man found late Monday in North Augusta. According to Aiken County Coroner Tim Carlton, a passerby found J.C. Mims of H and H Street shot about 10:45 p.m. He was pronounced dead about 11:30 p.m. in an Augusta hospital. An autopsy is scheduled today in this ongoing investigation by the coroner's office and sheriff's office, Carlton said.