Investigators are working to determine what sparked yesterday’s three-alarm blaze inside a Union City building that left dozens of people homeless.
The four-story structure on Bergenline Avenue burned for more than four hours. Crews remained on the scene overnight dousing hotspots. 
Residents who were living in the building’s 24 apartment units are currently staying in temporary shelters. The Red Cross is assisting the displaced residents. Two stores were located on the bottom floor of the structure. 
Inspectors are expected to determine today if the building will need to be torn down.