Columbia County authorities did not name him this morning, but said he was a 58-year-old white male from Sullivan, Ill.
The interstate was reopened on both sides, but there was no immediate word from authorities on what had occurred. What appeared to be a body was visible on an embankment near the top of the Chamblin Road overpass, with a spotlight from an ambulance shining on it.
Columbia County dispatch received a call about the suicide threat at 6:23 p.m., and police shut down both sides of the interstate from exits 183 to 193. The man was under the Chamblin Road overpass, and that bridge was also closed.
At 10:42 p.m., after hours of no reports from authorities, a large explosion was heard coming from the bridge, followed by gunshots. Minutes later, an ambulance arrived accompanied by a Georgia State Patrol cruiser.