Passaic, New Jersey house fire leaves at least four firefighters injured

Four firefighters are hospitalized with heat exhaustion after battling a house fire in Passaic, New Jersey on Wednesday.

Officials say the fire started just after 3 p.m. inside a home on Union Avenue.

Passaic's mayor says the family who lives there got out safely but lost all of their belongings.

The mayor says the hot and humid weather affected first responders. 

The cause of the fire remains under investigation.

This is breaking news. This story will be updated as more information becomes available.