UPDATE: Four people were arrested, three of which are students, according to a spokesperson with the Chattanooga Police Department.
Three juveniles, all students were taken to JDU.
Hamilton County Sheriff's Office spokesperson confirmed that pepper spray was used to disperse the fight.
ORIGINAL STORY: At least two people were arrested after an altercation at Brainerd High School Wednesday, said Hamilton County spokesman Tim Hensley.
Hensley said a dispute between two students escalated when family members came to the school.
Three adults arrived at the high school, indicating they were there to check out a student, but inside "joined in an altercation," Hensley said.
The Hamilton County Sheriff's Office and Chattanooga Police Department responded to the situation.
Two adults were arrested and a third adult was transported to the hospital as a result of being pepper-sprayed, Hensley said.
He said it was likely there would be a third arrest. No students have been arrested, but Hensley said investigators were still meeting with students.
Hensley did confirm that no students were harmed and the rest of the student body was not at risk at any point. The school is not on lockdown or a lock-out.
This is a developing story. Check back with the Times Free press for updates.