Three armed men broke into a home in the 5400-block of South Damen Avenue at about 11:45 p.m. and displayed a weapon to a 33-year-old man who was sleeping, police said. A 56-year-old man and a 29-year-old woman and a 6-year-old girl were also in the home, according to Chicago police.
The robbers struck the older man in the face with a handgun, police said.
After attacking the man, the robbers stole property before pouring gasoline throughout the house and setting it on fire, police said.
The 56-year-old man was taken to the University of Chicago Medical Center in stable condition. Officers also initially believed the 56-year-old had been stabbed, but hospital staff later determined the man's abdomen had been cut by glass.
None of the other people in the home were injured, and the 6-year-old girl did not witness any of the incident, according to a police source.
No one was in custody. Area Central detectives are investigating.
The Sun-Times Media Wire contributed to this report.