Georgia Bureau of Investigation agents still are not releasing additional details in the death of a Statesboro man found dead in a Candler County field after having been missing for almost two weeks. Harrison Wayne Olliff, 21, disappeared Nov. 26, and investigators suspect foul play.However, they are not revealing the cause or manner of death, claiming to do so could hamper investigations, said Cathy Sapp, Assistant Special Agent-in-charge at the Statesboro GBI Office.GBI agents are leading the investigation, working together with Bulloch County and Candler County sheriff’s investigators, she said.Olliff left his Olliff Road home around 2:30 a.m. Nov. 26, telling a friend at his home he would return, and that he was going to Cobbtown, according to reports. Later that evening, when his girlfriend was unable to reach him by phone, assuming he was with his parents, she called Wayne and Linda Olliff, who said they thought their son was with her.Search parties on foot and by helicopter were launched, covering a four-county area.