PRINCETON (AP) —  Authorities say an explosion and fire at a house in Princeton left one person dead and two others with unknown injuries.

Emergency personnel responded shortly after noon Thursday and discovered a collapsed structure that was fully engulfed in flames.

A 39-year-old woman and a 59-year-old man, both of Princeton, were found outside the residence and transported to a hospital. Their conditions are not known.

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Authorities say the victim who died was found inside the structure.