7-year-old boy, man killed in fire on Chicago's South Side

A man and a child were killed, and three others were injured in an apartment fire in South Shore early Saturday morning.

The Chicago Fire Department responded to a fire in a three-story building located in the 2400 block of East 78th Street around 2:30 a.m. 

Chicago police said a 24-year-old man was pronounced dead on the scene. 

Two other adults and two children were transported to area hospitals. A 7-year-old boy was taken to Comer Children's Hospital, where he was initially listed in critical condition. On Tuesday, the child was pronounced dead as a result of his injuries.

The Cook County Medical Examiner identified the boy as Adrian Matias.

A 2-year-old boy was taken to the same hospital in good condition. 

A 24-year-old woman was taken to the University of Chicago Medical Center in good condition. A 27-year-old man was taken to Trinity Hospital in good condition with a non-fire-related injury. 

Police said a total of 23 people were displaced. The Red Cross was on the scene assisting. 

The fire remains under investigation.