A mass shooting at Ohio’s Old West End Festival in Toledo left 12 people injured after a dispute between two rival groups escalated into gunfire, police said.

Authorities believe the confrontation began with an argument and chase before turning into an exchange of shots between individuals involved.

Investigators said some victims were targeted, but most were innocent bystanders caught in the violence.

Police have identified persons of interest, recovered two firearms, and are still working to locate and arrest the suspects, USA Today has reported.

The ages of those injured range from 14 to 61, and the investigation remains ongoing.