(Avoca) – Students and staff at the AHSTW School in Avoca have the day off due to an incident that took place Tuesday night. According to Superintendent Darin Jones, he received a call at around 9-p.m, indicating the fire alarms were going-off and school staff saw smoke in the Pre-TK-and Kindergarten pod.

Personnel from the Avoca, Walnut and Harlan Fire Departments were paged to the scene. They determined the smoke was coming from an overheated air handling unit on the roof. Heat from the unit ignited filters in the unit, causing smoke to filter in to the early childhood pod. The smoke left soot on tables, chairs and other items in several classrooms. There was no structural or other damage to the building and classrooms.

A cleaning service specializing in disaster and emergency clean-up, was called on to clean and air-out the affected areas. Classes were cancelled to allow the clean-up to take place. Afternoon activities were not affected.

Superintendent Jones was hopeful classes would resume as normal on Thursday.