RIMERSBURG, Pa. (AP) -- Authorities are still investigating the cause of a fire that killed an 83-year-old woman Wednesday in Madison Township.

Rolla Walter, 83, was found in the dining room of her home in Clarion County after the fire, which was reported about 5 p.m. Wednesday.

Police said Walter lived with her son, but he was working at the time.

Trooper Jason Scholl, a state police fire marshal, said the cause of the fire remains to be determined, but he doesn't believe it is suspicious.