GRAND PRAIRIE (CBSDFW.COM) – An 81-year-old woman died Monday when her house caught fire.

It happened in the 200 block of NW 14th Street.

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deadly house fire in Grand Prairie (Chopper11)

A fire department spokesperson says the woman’s oxygen tank may have been a factor in the fire.

Neighbors saw the smoke and called 911 around 1:45 p.m..

The caretaker for the woman, who lives alone, had just left.

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deadly house fire in Grand Prairie (Chopper11)

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 Authorities say they found the woman in her bedroom where the fire started.