Deputies responded to Sumyung Ho Night Club at 519 Broad St.
All injuries were not life-threatening.
Chang-Lassic told a local media outlet.
The third victim was Trudale Foster who was grazed on the right foot and right thigh and the fourth victim was Jamal Lee who was struck in the right foot.
Ortiz said when a bouncer attempted to break up a fight, the suspect pulled out a gun and started shooting, hitting the bouncer, someone exiting a restroom, a 20-year-old man on the dance floor and a fourth person outside the club.
The Richmond County Sheriff's Office is investigating a Friday shooting that left four people injured and two arrested at a dance club in downtown Augusta.