The New York Police Department had a suspect in custody Saturday night, within six hours after the victims were found.
Police and firefighters were called to a blaze around 4:30 p.m. at a 10th-floor apartment on Park Avenue and 132nd Street. They extinguished the small fire and found the 55-year-old woman with stab wounds to her torso and the 32-year-old man with wounds in the torso and head.
He's in critical condition.
Police say they soon got the suspect's name and description. Based on the description, officers stopped him at a nearby subway station and took him into custody.
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