Deputy Fire Chief Randy Banker said no one was hurt in the electrical fire in the building at 1005 Lorlyn Circle.
"The residents were home at the time, and they notified us," Banker said.
Firefighters found the fire in the third-floor bedroom. A malfunctioning electrical outlet apparently caused an arc that ignited the bedding, Banker said. Firefighters finished the job started by residents of the building.
"The vast majority of the fire was put out by the occupants," Banker said.
Firefighters were able to leave the scene by about 4:09 p.m., Banker said.