A grandmother was critically injured in a house fire on Rubio Street this morning.

This is a developing story. Stick with the Times Free Press as we bring you more information.

UPDATE July 13 at 11:45 p.m. Chattanooga grandmother remains in critical condition after Wednesday morning fire

UPDATED: The 44-year-old grandmother who was seriously injured in this morning's fire at 1725 Rubio Street is listed in critical condition this afternoon at the Joseph M. Still Burn Unit in Augusta, Ga.

The victim's name is being withheld by this office until all next of kin have been notified.

The cause of the fire remains under investigation.

Previous story:

A Chattanooga woman is in critical condition after being rescued from a house fire this morning. 

The Chattanooga Fire Department received the call at 5:29 a.m. and responded to the home on Rubio Street with four fire companies. 

Battalion Chief Lesley Morgan said smoke and flames were coming out a bedroom window when the firefighters arrived. 

When neighbors told firefighters that a grandmother, her son and two grandchildren might still be inside the home, Morgan called for additional help. 

Firefighter Engineer Andrew Thomas and Firefighter David Ruffin began searching the home and, a short time later, they found the grandmother in a corner of the living room, on the floor and unconscious. She was carried from the home and received treatment from firefighters and paramedics with Hamilton County EMS. 

Other firefighters continued to search the house for the children, but later learned the children were staying with their mother elsewhere. The victim's son was also away at the time. 

The grandmother was transported to Erlanger Medical Center in critical condition, and after being evaluated, was expected to be flown by Life Force Air Medical later this morning to the Joseph M. Still Burn Center in Augusta, Ga.

The cause of the fire is under investigation.