At least 20 people displaced by fire on Chicago's West Side

CHICAGO (CBS)-- A building fire left at least 20 people displaced and one person injured Thursday night. 

Just before 11:30 p.m., Chicago police said the fire broke out at a three story building in the 1200 block of South Independence Boulevard. 

A 61-year-old man was taken to a local hospital  for chest pain and smoke inhalation. 

A warming bus was on the scene for residents. At least five of the residents are under 18 years old.

"From what I can grasp, everyone was able to get out safely," Resident Keishjun Owens said. "I would like to believe I would be able to go in and grab resources."

Another resident, who is pregnant, described the chaotic scene. 

"They were doing more yelling than they normally have been doing, I smell the smoke," Darnella Campbell said. "I'm pregnant and I just came from another fire so I got me and my baby and left." 

The cause of the fire is under investigation.