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NORTH BEND, Wash. -- The King County sheriff's office in Washington state says a woman stabbed an intruder to death at a North Bend home.

Sgt. Cindi West says the woman's husband was struggling with the man about 1:40 a.m. Monday when she got a knife and stabbed the stranger to help her husband.

The couple was not injured.

West says the intruder is probably the same man who went to the home Sunday afternoon -- just 12 hours earlier -- walked in through an unlocked door, hit the woman and escaped with cash.

Investigators say it apparently was a random attack. They don't know why the house was targeted or why the robber went back.

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