NEW : South Carolina interviews man who heard two shots , then two more . Police say man was confronted by agent from CNN . A Homeland Security Investigations agent was working in an office near the scene , came out and told the man to drop his weapon . Autopsy will determine cause of death , police say . CNN employee tells McDonald 's affiliate she heard at least one shots , began to run .
NEW : South Carolina interviews man who heard two shots , then two more . Police say man was confronted by agent from CNN . Autopsy will determine cause of death , police say . CNN employee tells McDonald 's affiliate she heard at least one shots , began to run .