India, Aug. 7 -- Quornelius Radford was identified as the Army sergeant who opened fire at the Fort Stewart military base in Georgia on Wednesday. At a press conference, hours after the shooting, officials revealed that the 28-year-old used a personal handgun to shoot at his colleagues. A potential motive, however, remains unclear.

Radford was previously arrested for Driving Under the Influence (DUI) in Georgia. On Wednesday, he opened fire at his workplace, officials said. Soldiers in the area who witnessed the shooting 'immediately and without hesitation' tackled the shooter.

"Soldiers in the area that witnessed the shooting immediately and without hesitation tackled the soldier, subdued him. That allowed law enforcement to then take ...