ATLANTA -- Atlanta police have released video and a photo of two persons of interest in a quadruple shooting at an Underground Atlanta concert venue that left two people dead Sunday night.

The shooting happened at the Masquerade Club's "Hell" venue in the Kenny's Alley section of Underground Atlanta just after 9:30 p.m.

According to police, two men had climbed up on the stage during intermission of a Cousin Stizz concert. Another man in the crowd got upset, and an argument ensued.

That man drew a pistol and shot the two men who had been on the stage. Those two men later died. It's believed that the gunman then fired forwards the ground, injuring two other people.

Officials identified 21-year-old Ewell Ynoa, a 21-year-old aspiring rapper from Florida and Worcester, Mass., as one of the fatal victims; Friends identified Giovan Diaz from Massachusetts as the other man who died.

The gunman fled the scene before being stopped by security.

On Monday, police videos video from the club showing a person of interest. Watch below:

Police also released a photo of the man along with another person of interest:

Anyone with information on their identity is asked to call Crime Stoppers Atlanta at 404-577-8477.

PHOTOS | Fatal shooting at Masquerade concert venue