Three students were arrested following a fight at Central High School in St. Paul that saw pepper spray used to get it under control.
KSTP reports the incident happened just before the advisory hour on Wednesday morning, when a brawl broke out in the cafeteria.
Three juveniles were arrested in connection with the fight, police told the TV station, with two arrested at 9:30 a.m. and the third at 12:41 p.m.
According to KFGO, many other students crowded in to watch the fight, adding to the "commotion," and a school resource officer had to use pepper spray to get one student under control.
The station reports all three arrested teens are said to have resisted officers.
KARE 11 reports that Principal Mary Mackbee called parents to let them know of the incident, saying five students were involved in the fight and that some students knew through social media that it was going to happen, but did not report it.
"Again, the safety of staff and students is a priority, and I will not tolerate this kind of behavior at school," she said.
Violence in schools has become a hot issue in St. Paul in recent months, with city teachers threatening to strike back in December over safety concerns, after another attack at Central High saw a teacher suffer brain injuries.
The Pioneer Press reports that Central, Como Park, Humboldt and Johnson high schools are getting extra help from "district-level administrators" in response to the number of fights there have been early in the school year.