Police reported to the Power Lounge in Little Rock around 2:30 a.m. after reports of gunshots.
According to Fox 16, one person was in critical condition and the other injuries did not appear to be life-threatening. The youngest victim was a 16-year-old, Fox news reported.
In a tweet police said they did not believe the incident was an active shooting or terror related. They said it appears to have been a dispute at the concert and gunfire was exchanged.
There is no immediate information on the shooter.