Cobb County Police identify the victim as 17-year-old Asia Leeshawn Ferguson of Columbia.
An autopsy will be performed on Ferguson Monday.
The accident took place at approximately 2 p.m. Saturday. Ferguson was part of a group from Oakey Spring Baptist Church in Springfield that was visiting the park.
According to park spokeswoman Hela Sheth, the teen scaled two six-foot fences that were clearly marked with signs that read"Danger" and "Do Not Enter." He was with another friend at the time.
At some point, the coaster hit the victim.
Cobb County Police Spokesman Sgt. Dana Pearce says it does appear there was adequate warning of the risk. "It would be hard to imagine how somebody could not read those signs and yet traverse both those fences."
No one else was injured.
"We saw everybody running, and they closed it(the area), they had security guards and everybody belonging to it," says Demetris Garmon, a parkgoer who witnessed some of the aftermath.
At this time, it's not clear why the teens did not go through the main entrance. Police were investigating whether he entered the restricted area to retrieve a hat he may have dropped while riding the coaster.
The Batman roller coaster has been at Six Flags Over Georgia since 1997.
In May 2002, 58-year-old groundskeeper Samuel Milton Guyton of Atlanta was killed after he wandered in a restricted area under the Batman roller coaster's path and was struck in the head by the dangling leg of one of the ride's passengers. The ride was closed for a day to allow the federal Occupational Safety and Health Administration to inspect the ride. It was deemed safe for passengers.
In June 2007, a teenager's legs were severed when cables snapped on the Superman Tower of Power ride at Six Flags Kentucky Kingdom in Louisville, Ky. Doctors were able to reattach Kaitlyn Lasitter's right foot, but she had to have some of her left leg amputated and subsequent surgeries.
State officials blame a faulty cable and slow response by an amusement park ride operator in the accident. Her family is suing Six Flags Kentucky Kingdom, claiming the park failed to maintain the ride and equipment and ensure riders' safety. The amusement park has denied liability in court filings.
