Investigators say the woman's eldest son made the discovery in the home at 86-99 26th Avenue in the Gravesend section and called 911.
Police responded and found her unconscious and unresponsive. She was pronounced dead at the scene.
The NYPD identified her as Petrina Masotto.
A younger son, who is 55, was taken into custody and is being evaluated at a psychiatric ward.
The medical examiner will determine the cause of death and the investigation is ongoing.
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