Violent brawl at Los Angeles high school caught on video

SYLMAR, LOS ANGELES -- A violent lunchtime brawl at broke out at Sylmar High School in Los Angeles, and the violence was all caught on video.

Footage of the chaotic fight went viral on social media within hours. Additional patrol officers were on duty on campus Tuesday as students returned to school.

In the video, officers, teachers and other students jumped in to try and break up the fight. It was unclear what led to the brawl.

The principal sent out a letter to parents Monday to inform them of the fight and that students involved are receiving disciplinary actions. There were no known arrests.

LAUSD Superintendent Michelle King released a statement on Tuesday regarding the incident.

Though she did not specify what sparked the fight, she emphasized that the LAUSD is "the most diverse school district in the nation" and that the district "will not tolerate targeting or violence of any kind on our campuses."

King said law enforcement is continuing to investigate the incident, and she expressed concern and speedy recovery for anyone who suffered injuries in the brawl.

"The bottom line is that all students are welcome at L.A. Unified schools," she said in the statement.