Chicago firefighter seriously injured after falling from roof during call on NW Side, officials say

A Chicago firefighter is in serious condition after falling from a roof during a call on the city's Northwest Side, according to officials.

The incident happened around 6:10 p.m. Sunday in the 800 block of North Hamlin Avenue in Humboldt Park.

Initially, firefighters received a report of multiple people trapped in a three-story building that was on fire, according to the Chicago Fire Department.

When crews arrived, they found heavy flames on the second floor, spreading to the third, and began attacking the fire from the outside.

Over 100 firefighters responded to the scene. Once the fire was somewhat contained, they transitioned to fighting it from inside the building.

Crews also started searching for any trapped victims. After a thorough search, they found no one was trapped and that several people had self-evacuated.

About 10 minutes into the call, a firefighter operating on the roof lost his footing during the response and fell through a light shaft down to the basement, according to CFD.

He sustained serious injuries and was taken by ambulance to Stroger Hospital. His identity and age have not been released.

At least eight people have been displaced as a result of the fire, CFD said.

The cause and origin of the fire are still under investigation.