The shooting took place shortly after midnight when festival goers got into an argument and gunfire followed, according to the state’s Bureau of Investigations (OSBI).
A suspect in the shooting turned himself in to the Muskogee County Sheriff’s Office Sunday afternoon, the OSBI said in a news release. Charges against the suspect have not yet been announced.
Law enforcement was present at the festival and provided initial aid to the victims, according to an OSBI statement.
The injured range in ages from 9 to 56 years old, according to the OSBI. The agency earlier said two juveniles were wounded, but later corrected the number to one.
All are said to have non-life-threatening injuries, according to the OSBI.
Some 1,500 people were in attendance at the annual Memorial Day event in Taft, southeast of Tulsa.
Osaka said she was “petrified” when she saw the commotion.
“I was just in the Barclays center and suddenly I heard shouting and saw people running, then we were being yelled at that there was an active shooter and we had to huddle in a room and close the doors,” Osaka said on Twitter.
Eighteen people suffered injuries in the incident, with nine taken to area hospitals, police said.