State and local investigators are trying to figure out what started an overnight fire in a five-family home on Rockwell Street in Norwich.
Police say at least one family was home when the fire broke out, but everyone was able to get out safely.
Fire crews say heavy smoke and flames were coming from the second floor of the two-story home when they arrived shortly after 10 p.m. Saturday night.
Fire Officials said one firefighter did suffer a knee injury and was taken to a local hospital, but has already been treated and released.
Investigators say much of the inside of the home collapsed during the fire.
The Red Cross is now assisting those forced out by the fire.
The cause of the fire remains under investigation.