Excerpts from abc7chicago.com:

Chicago firefighters responded to a report of residents trapped by a fire at approximately 3:15 a.m. in a one-and-a-half story home at 11828 South Perry in West Pullman on the city’s far South Side Wednesday.

One resident jumped from a second floor window and two others evacuated.  79-year-old Jimmy Shearrill, who had difficulty walking, was trapped by the flames on the second floor. Fire officials said it was difficult to reach him because the staircase to the second floor was burned out. Shearrill was conscious when he was removed from the home but died later on the scene.

A Mayday call went out after a firefighter fell through the floor into the basement. He was treated at a local hospital and released.

The cause of the fire is under investigation.