The patron pulled out a pistol and shot the rowdy concertgoers, according to police. The gunman also fired toward the ground, and “most likely” hit the other victims at that time, Bender said.
The crowd, including the victims and the gunman, ran toward the front exit.
Two people collapsed going up a flight of stairs that led to the exit, Bender said.
“The suspected shooter, still armed, was witnessed by unarmed security but was not successfully detained,” she said.
One of the victims died on the scene. That person had a gunshot wound to the chest.
The others were taken to Grady Memorial Hospital, where the second person was pronounced dead with gunshot wounds to the upper and lower torso.
The two survivors were stable with foot and ankle wounds, officials said.
When The Masquerade relocated last November from its longtime home on North Avenue to Kenny’s Alley, the Underground location had originally been conceived as a temporary space. Management later signed a lease that will last at least 10 years.
Officials announced the deal last month.