SPENCER, Iowa (AP) -- Authorities say a woman whose body was found in a burning apartment in Spencer died of smoke inhalation.
Firefighters found the body of 47-year-old Karen Colding in a first-floor bedroom late Monday night.
Spencer Fire Chief Doug Duncan said an autopsy showed Colding had high levels of carbon monoxide in her system.
He said the fire was started by improperly discarded smoking material, which ignited a sofa in the living room.
The apartment building has three units. No one was else was injured.
