Police continue to look for suspects in an Oklahoma mass shooting on Sunday that left at least 23 injured following a scuffle at an illegal party over the weekend.

Eyewitnesses told the Associated Press that around 250 people attended the party at a campground that was advertised over the weekend. Jeremiah Smith, an attendee, told the outlet that fighting started when a group of girls started arguing over boyfriends, which escalated into a several-minute-long gunfight.