AUSTIN -- Firefighters are investigating a two-alarm fire in an apartment building in Northeast Austin Thursday evening.
AFD says the fire broke around 8:44 p.m. at 2250 Ridgepoint Drive. Firefighters had the fire confined to one building, building number 10, at the Promontory Point Apartments around 9 p.m.
Officials said there were 30 people living in building number 10 at the time of the fire. All residents were evacuated, as well as tenants in buildings on either side of building 10.
The building was three stories tall and was made up of one-bedroom apartments. Some residents say they heard an explosion before the fire started.
One firefighter was injured when he fell from the attic to the third floor. The firefighter injured his knee but is expected to be okay.
No one else was injured.
Fire investigators were on the scene around 5:30 a.m. Friday. They took pictures and talked to witnesses to try and find a cause for the fire.
Friday afternoon investigators ruled the cause of the fire to be accidental. They say combustible items were too close to a water heater.
Damage estimated at $1.2 million structure and $400,000 contents.
Central Texas Red Cross is now assisting the 27 people who lost their homes. AFD says they are all adults, and no children lived in the building.
"The good thing is no injuries, the bad thing is the entire building has been heavily damaged and we are working with the Red Cross to get these people places to stay," AFD Batallion Chief Palmer Buck said.
The apartment complex is also helping to find housing for the displaced residents. All 24 units of building 10 suffered water an smoke damage. Clothes and belongings of those who lived there were also damaged.
The apartment complex is now accepting donations to help those affected. Items can be dropped off at the complex's main office.