Kerry Lewis, 46, of Brooklyn was charged with two counts of murder and possession of a weapon, police said.
The suspect was the woman's boyfriend, police said.
Police said he was at the home in Cypress Hills on Sunday and made incriminating statements when a relative of the victims showed up and found the victims.
Police said the father and daughter were found dead on the kitchen floor with their throats slashed.
The victims were identified as Roosevelt Simmons and Jacqueline Delyons, police said.
Police have not released the motive for the double murder.
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