Authorities are investigating a nightclub shooting that left dozens injured Saturday morning in Little Rock, Arkansas.

According to ABC News, the shooting took place at around 2:30 a.m. at Power Ultra Lounge during a concert. Police confirmed 25 people were shot in the venue, while three others sustained unrelated injuries. Two of the 28 victims, which ranged in age from 16 to 35, are reportedly in critical condition, while the others are being treated for non-life-threatening injuries. Little Rock Mayor Mark Stodola announced all victims were expected to survive.

Officers said they do not believe the incident was an act of terrorism, and claim it likely resulted from a dispute. Little Rock Police Chief Kenton Buckner estimated about 20 to 40 shots were fired by multiple shooters. No arrests have been made, as officers have yet to identify a motive or any suspects.

Memphis rapper Finese 2tymes was the headliner for Saturday’s concert. Shortly after the shootout, he posted a message on Facebook expressing his condolences.

“Prayers go to the innocent people and there [sic] family that came out to support me, last night in Little Rock, Ark.,” he wrote. “The violence is not for the club people. We all come with [one] motive at the end of the day, and thats [sic] to have fun. Not to be hurt.”

Stay tuned as more information becomes available.