LEAF RIVER, IL (WIFR) UPDATE - Ogle County Sheriff's Office confirms the firefighter that passed away is Gregory Wood, 19, of Leaf River.
Firefighters arrived on-scene around 12:45 am and found the first floor of the two-story house fully engulfed.
Three of the residents were able to escape, two of them were transported to Rockford hospitals with serious injuries.
After the fire was extinguished, firefighters found Wood in a second-floor bedroom and was pronounced dead by the Ogle County Coroner.
The Illinois State Fire Marshal and the Illinois State Police Crime Scene personnel are helping in the investigation.
A Leaf River firefighter has died in a 5-alarm fire at the firefighter's own home in the 200 block of West Second Street.
Two other family members, who were also firefighters in the department, were injured in the blaze.
Leaf River Fire Chief Steve Shelton has confirmed the information but has not released a name on the victim or the family members.
We have a reporter on the way to the scene and will continue to update has information comes in.