A student at Union-Endicott High School was arrested after a window was broken in the building this afternoon.

The incident prompted "shelter in place" procedures to be implemented as a precaution.

According to the school district, students and staff were advised to stay in classrooms while police investigated the incident.

Detective lieutenant Steven Noyes says a 16-year-old boy was charged with criminal mischief.

Noyes said police were called to the high school on East Main Street at 12:57 p.m. He said the broken window was in a third-floor stairwell on the north side of the building.

No injuries were reported and no other students were believed to be involved in the incident.

A school district spokesman says the "shelter in place" directive came after a loud noise was heard. He says classroom doors were kept closed for about an hour. No one was allowed to enter or leave the school until police concluded their investigation.

Students returned to their normal schedule at about 2 p.m.