Authorities say a deadly house fire that killed a Fallon woman was sparked by a burning or smoldering cigarette.
An autopsy found Connie Jean Winterton, 41, died of asphyxiation.
The Churchill County sheriff's office said the fire Monday began in a recliner.
Authorities said Winterton told her 6-year-old daughter to leave the house when the smoke detector activated, but she herself remained in the house for unknown reasons.
The child was unharmed and ran to a neighbor's house, who called for help.