Investigators are still trying to determine what caused an accident in Franklin on Friday that claimed the life of one and sent 15 others to the hospital after they were exposed to carbon monoxide fumes. Emergency personnel responded to a 9-1-1 call that was received around 7 pm on Friday at Norton Creek Farms on Prentiss Bridge Road in Franklin. The call said that two workers had been found unresponsive inside a refrigerated storage building at that location. One of the workers who was operating a fork lift at the time has been identified by authorities as Bobby Ammons and was later pronounced dead at Angel Medical Center in Franklin. The second victim whose identity was released on Tuesday is now known to be 43-year-old Melvin Lands. Lands was airlifted to Greenville Memorial Hospital and was treated for carbon monoxide poisoning and since then been released. When law enforcement arrived on the scene they found the two unconscious men on the floor of the cooling unit being aided by bystanders. First responders then began performing CPR on Ammons who had stopped breathing. As a result of their attempts to aid the two men several of the rescuers including deputies, firemen, and the bystanders who first came to their aid began showing serious respiratory problems as a result of being exposed to the carbon monoxide. In total 15 emergency workers and civilians were admitted to the local hospital and treated and released that same evening. Macon County sheriff Robert Holland has confirmed that Bobby Ammonds death was caused by carbon monoxide toxicity. The cause of the incident is still under investigation by Macon County law enforcement and officials with the Occupational Safety and Health division of the North Carolina Department of Labor and it could be several weeks before the final reports on the incident are released.