This article has been updated to include additional information.

A Juneau man was arrested on assault charges Friday after Thunder Mountain High School staff reported a man had been banging on the high school’s windows and had previously chased students inside the school’s gym, according to Juneau Police Department.

Monte Skon Nix, 29, was arrested on two counts of assault Friday afternoon and taken to Lemon Creek Correctional Center, according to police. The assault charges stem from allegedly placing others in fear of physical injury, according to JPD. There were no reports of injuries or damages to the school.

At about 1:30 p.m. Friday police received a report from the high school that a man was banging on windows at the school trying to get inside, and that the same man had previously chased students around the school’s gym before being escorted out by school staff, according to police. When inside the school, the man threatened to assault school staff.

During the incident TMHS initiated a stay-put notification.

In an email, Juneau School District Chief of Staff Kristin Bartlett said that it is her understanding the man entered the building as students were coming back into the school after lunch.

“TMHS has a secure entry system where people are buzzed in through the main doors during most of the school day,” Bartlett said.

Police say alcohol appears to be a factor in the incident and it does not appear to be connected to the ongoing homicide investigation that began after a body was found on a nearby trail.

• Contact Ben Hohenstatt at (907)308-4895 or bhohenstatt@juneauempire.com. Follow him on Twitter at @BenHohenstatt.