UPDATE: Two Chattanooga firefighter was injured Sunday morning while working to extinguish a duplex fire in the Glenwood community. 

The Chattanooga Fire Department received the call around 10:30 Sunday morning and responded to the fire on Glenwood Circle with five fire companies.

Investigators tell Channel 3 most of the “A” side of the duplex was fully engulfed in flames and had broken through the roof when the first firefighters arrived on the scene. 

As the firefighters made their way inside the duplex with handheld hose-lines, a plaster ceiling in one of the bedrooms fell on top of one of the firefighters, hitting him on the head and back. 

As the firefighter was helped out by other firefighters, they were ordered out of the structure for their own protection. 

Firefighters they were able to get the fire under control in roughly 20 minutes.

The homeowners were home when the fire was discovered. They told investigators they were cooking breakfast when they saw smoke coming from the kitchen cabinets and the air conditioning vents. 

Investigators tell us they picked up their dog “Quejoe” and quickly got out of the house. The resident in the “B” side of the duplex also got out uninjured. 

A neighbor saw the smoke and called 911. The cause of the fire is under investigation.

No estimate on the dollar loss was available, but the damage was extensive. 

Two cars were also badly damaged or destroyed. Volunteers with the American Red Cross of Southeast Tennessee were called in to provide assistance to the victims.

The injured firefighter whose name is not being released at this time  was taken to Erlanger Medical Center, where he was treated and released. 

Battalion Chief Rick Boatwright said the firefighter will be off work for several days while he recovers from his injuries.

Chattanooga Firefighters are on the scene of a house fire in 200 block of Glenwood Circle. 

Stay with Channel 3 for more on this developing story.