The real reason behind the fire is being investigated, but Columbia Fire and Rescue said multiple explosions heard throughout the neighborhood were from oxygen tanks bursting in the blaze. Ervin and other first responders did not suffer any injuries, authorities said.

Neighbors said that the non-communicative 37-year-old woman lived at the home with her mother and father. Her parents escaped the fire but couldn’t get back in after the explosions began. The rescued woman is in critical care at Vanderbilt Hospital for burns and smoke inhalation, while her mother and father were both treated at Maury Regional Medical Center.