According to authorities, the man entered the lobby shortly before noon carrying a jug believed to contain some form of accelerant. The individual then doused the lobby with the liquid before igniting it and fleeing the scene.
The fire was put out quickly, preventing any significant damage or injuries.
Suspect responsible for Lake County Jail fire
Authorities describe the suspect as a Black male dressed in a black or dark-colored t-shirt and jeans. The individual was also seen wearing a dark baseball cap featuring a logo on the front.
The sheriff says the suspect fled the scene in a smaller or mid-size blue SUV or crossover, possibly a Lexus, Toyota, or a similar make.
Anyone with information on the suspect is urged to contact the Lake County Sheriff's Department Detective Bureau at (219) 755-3346.