Asay says the explosion caused a small fire, but sprinklers doused it before crews arrived.
Classes were canceled and the building is expected to remain closed for hours.
Firefighters are investigating what chemicals were stored in the room.
NOTE – Residence Hall, Dormitory, and Fraternity-Sorority is included under Residential Category
**NO MEDIA COVERAGE – State Fire Marshal Report** — On March 18, 2015 around 2:48 am, the Maryland State Fire Marshal’s Office was requested for a fire at Rising Sun High School. Rising Sun High is a two story, brick educational facility located at 100 Tiger Drive in Rising Sun of Cecil County. Approximately 30 firefighters from Rising Sun, Northeast and Oxford (PA) responded and extinguished the fire within 20 minutes. Investigators from the State Fire Marshal’s Office determined the fire to have originated in the mechanical room of the school due to an electrical malfunction. The high school was protected by a working fire alarm which alerted the local fire departments quickly. The sprinkler system was also activated, which contained the fire to the mechanical room. There was no structure damage due to the fire.