KBJR 6 has learned a second child has died following a Hibbing house fire on Tuesday, which now leaves four dead.
According authorities, the two adults, who were grandparents to the children have been identified as Steven Gillitzer, 67, and Patricia Gillitzer, 63.
They were the grandparents of Todd Gillitzer Jr., 9, and Isaiah Adams, 3, who also perished in the fire.
Todd Jr. often went by the name of Jacob.
Neighbors say the victims were loved in the neighborhood, and a bright spot on the block, and could always be seen riding through the area on their bikes.
Steve also worked as a captain for the Hibbing Fire Department as a captain for 24 years before retiring in 2000.
The fire that claimed their lives broke out Tuesday morning around 1:30.
Authorities say Jonathan Gillitzer, 8, was awoken by his grandfather Steve, who rushed him to safety.
Steve went back into the home to continue rescue efforts, but never returned.
Fire crews battled the blaze for more than three hours in temperatures of 22 below zero.
The four occupants of the home were pulled from the fire shortly after crews responded.
All four had no pulses, and were not breathing.
Authorities report the children were resuscitated on scene, but both have since died.
Steve and Patricia were both pronounced dead at the scene.
Neighbors are still in disbelief.
"I was kind of speechless. I didn't know what to think. It's like hard to believe that happened. It still hasn't processed yet. It's a big loss, it's going to... everyone liked them. They were nice people, and it's going to be hard," said neighbor Nic Cicchi.
The Hibbing Fire Marshal is investigating the fire with help from the State Fire Marshals office.
There is no known cause at this time, and the home is a total loss.