Over a dozen people are facing charges for their involvement in the brawl that took place after the Westwood Regional High School graduation last Thursday.

The fighting broke out on the football field at the conclusion of the 6 p.m. graduation ceremony on June 20, ending with multiple injuries and one person in the hospital.

In the days since, the Township of Washington Police Department has been conducting an investigation using video footage, some of which has been circulating online, as well as witness statements.

The investigation determined that the involved people were two graduating students and their families, according to the Township of Washington Police Department.

A total of 25 charges including assault, disorderly conduct, failure to disperse, and obstruction have been filed against 13 people, police said. A police statement did not identify the people who were charged.

The cause of the fights has not been released.

“This was supposed to be an enjoyable night that the Westwood High School Senior class worked hard for and have been waiting for, which has been tainted due to the egregious behavior by some,” said the Township of Washington Police Department last week.

This article originally appeared on NorthJersey.com: Westwood High School NJ graduation fight leads to 25 charges