A pregnant mother and her son were among four people who died in an apartment building fire on Chicago's West Side early Thursday morning. Family identified two of the victims as 32-year-old Regina Henry and her 5-year-old son Jacian.

The fire, which killed three people, is considered to be suspicious. Evidence collected at the scene with the assistance of agents from the Bureau of Alcohol, Tobacco, Firearms and Explosives has been turned over to Chicago police detectives for a criminal investigation.