WICHITA (AP) – Wichita fire officials say a house fire that killed a 52-year-old woman was an accident probably caused by smoking in bed.

The fire on Monday killed Deborah Bacon at her home.

Investigators determined the fire startedon a mattress, likely by a cigarette. A smoke detector in the home was so damaged that investigators can’t tell whether it was working.

Bacon’s death was the first fire fatality in Wichita this year.

Last year, eight people died in Wichita fires. Four of those deaths were caused by careless smoking.