Four people are believed to have been injured at The Masquerade venue on Sunday night, with two suffering fatal injuries and two described by police as being in a stable condition. Police said the two victims in hospital were bystanders who were shot in their legs.
Police are looking for one man they believe targeted the deceased before fleeing. They are asking for witnesses to come forward.
Cousin Stizz, who was set to perform, posted a statement on Instagram saying he was "completely heartbroken."