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It happened Tuesday afternoon on Heatherdale near El Dorado Boulevard.
Harris County Precinct 8 deputy constables responded to a welfare check call to the home and found a man and woman dead.
Their identities have not been released.
Police say the woman, who was 80 years old, had multiple stab wounds. The man, age 81, suffered a gunshot wound, according to police.
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The incident remains under investigation.
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