The pensioner was found dead at an address in Park Lane at about 22:30 BST last Wednesday, West Yorkshire Police said.
A 54-year-old man was arrested on suspicion of murder but was subsequently released.
A file has been sent to the coroner, the force says.
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The death of an 84-year-old woman whose body was found at a property in Pontefract is no longer being treated as suspicious by police.