The fire broke out shortly after noon Saturday at Domain Courtney Place apartments on Courtney Lane.
Five units were affected by the blaze, either being rendered uninhabitable or having water or smoke damage.
Everyone inside the building got out safely. Residents say some children banged on doors to warn people about the fire.
"There were one or two children banging on the doors of the apartments. I thought they were playing. I just saw flames pouring out the bottom enterance and thick black smoke so I ran in and called 911. Some one else had already called it in," said Dan Hresko, a resident.
D.L. Perry, the fire department chief on the scene, said apparently a child had been playing with matches and set a sofa on fire.
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