Last Updated at 11:15 a.m. ET
An Army reservist was shot to death and another was custody Thursday at a post south of Atlanta that is a gathering place for area reserve units.
Army spokesman Col. Dan Baggio said the victim died at the U.S. Army Reserve Center located on Fort Gillem.
He could not offer specifics about the shooting that happened between 4:30 and 5 p.m.
Authorities said they were withholding the names of the soldiers until they can notify family members, but did say both were men.
CBS Affiliate WGCL reports that the suspect drove himself to the Lake City Police Department and turned himself in after the shooting.
Authorities have not determined a motive and it's unclear what the relationship was between the two men. Nobody else was injured.
Peter Chadwick, a spokesman for Fort Gillem and Fort McPherson, said it's unclear whether anybody else was inside a building when the shooting happened or whether any civilians were involved.
Fort Gillem, established in 1943, is one of three Georgia military bases slated to shut down under a sweeping round of base closures decided in 2005. Along with nearby Fort McPherson and Naval Air Station-Atlanta, the 1,427-acre Army post is scheduled to close next year.
The post includes the headquarters for the U.S. Army Recruiting Brigade and 1st U.S. Army, which does reserve and National Guard training east of the Mississippi. It also includes the U.S. Army and Air Force Exchange Distribution Region and the only Criminal Investigation Division laboratory in the world.
Chadwick said the reserve center is located on Fort Gillem, but does not share the same command.
Thursday's shooting followed a bizarre arrest at Fort Gordon Tuesday. A former national with a land mine, several grenades and night vision devices, authorities said.
Anthony Todd Saxon, 34, was charged with impersonating an Army master sergeant and stealing the infrared laser targeting sight.
It remains unclear what Saxon planned to do with the devices.
Fort Gordon spokesman Buz Yarnell said Saxon was stopped on the Army post because his car matched the description of a vehicle suspected in an earlier theft of military equipment from the post in April. Yarnell would not say what had been stolen.
Yarnell said the grenades, called "flash bangs," use blinding light and loud noise to stun people but don't explode into lethal shrapnel.
"He couldn't have done any serious damage," said Yarnell, who would not say whether the explosives were detonated.
He said there's no suspected connection between Saxon and after he tried to enter MacDill Air Force Base with weapons and ammunition in his vehicle.
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