Excerpts from Chicago.cbslocal.com:

The Lake County Sheriff’s Police and Fox Lake Fire Department were called at 7:08 p.m. Wednesday for a fire at 110 Terra Vista Court in Volo.

Sheriff’s deputies and firefighters found flames coming from the garage area. The residents are fire artists who were practicing their performance in the garage, when one of them dropped a flaming object. There were accelerants being stored nearby, and the garage went up in flames. The fire spread quickly, significantly damaging the townhouse and spreading to adjacent units. The garage, a car, and part of the residential structure were damage or destroyed.

One woman was burned with non-life-threatening injuries, and was taken to the hospital.