Last Friday night, the Concord High boys’ basketball home game against Portsmouth ended abruptly in the fourth quarter after a fight broke out in the stands.

In an email to the school community this week, Concord High Principal Tim Herbert said the administration is taking steps to prevent future disturbances at school athletic events.

Moving forward, the doors will lock halfway into basketball games, so people who arrive too late will not be allowed to enter, and reentry to events will not be allowed, Herbert said.

The school will also have additional administrative staff present at events and Concord Police providing support as well.

“I cannot express how sorry I am that we had this event,” Herbert wrote in the email. “We encourage fans to report any negative behavior observed at an event. This support will allow the administration to intervene and maintain a safe environment for all.”

Everyone involved in the incident is banned from future school events until further notification while Concord Police continues to investigate.

School rules for students are still in effect for students attending athletic events even though they are held after school hours, according to the Concord High code of conduct.

“Students are expected to behave appropriately at all school activities including school athletics and club events. All school rules are still in effect at these events whether they are held at Concord High School or at another site,” the code of conduct states. “Students who misbehave and/or demonstrate unsportsmanlike behavior will be asked to leave the event and will receive consequences.”