A resident of a building alerted officers on patrol in the Brainerd neighborhood that a building was on fire Monday night, Chicago police said.
About 9:40 p.m., officers were alerted about a fire at a building in the 9000 block of South Laflin Street and they discovered the rear of the structure was on fire.
Officers entered the building and alerted residents it was on fire and evacuated the building as the fire was beginning to spread. Chicago firefighters put out the blaze and were investigating the cause, police said.
Four residents of the building were displaced.
