Frankfort Fire Protection District responded Monday to a fire alarm at Lincoln-Way North High School, 19900 S. Harlem Ave. in Frankfort, according to a post Tuesday on the fire district’s Facebook page. No one was inside the vacant high school at the time of the fire, and no injuries were reported, according to Frankfort Fire Protection District Chief Sean Fierce.

Frankfort FPD responded to the alarm around 8:17 p.m. and were able to smell a burning odor, Fierce said. Crews located the source of the fire in the basement of the closed high school, which prompted the Fire District to raise the alarm to that of a structure fire to bring in more resources, Fierce said.

Industrial batteries had malfunctioned, and officials said they believe that was what caused the fire, though the official determination is still under investigation. The burning batteries released hydrogen sulfide, which was ventilated before crews put out the fire, Fierce said.

The fire did not spread beyond the basement area where the fire started because the building’s sprinkler system activated, Fierce said.

Frankfort FPD estimated the damage to be approximately $5,000 to $10,000, according to the post.

Fire crews from Tinley Park, Matteson, East Joliet, Elwood, Park Forest, Orland Park, New Lenox and the State Fire Marshal’s Office assisted in the effort to put out the fire, according to the post.