"There was a verbal argument in the basement, in William's room," Nassau detective sergeant John DeMartinis said. "That verbal argument led to a physical confrontation. She was struck multiple times in the head with a blunt instrument and she received multiple skull fractures."
Denise Tracey's body was found in a nearby parking lot dumpster the following day.
Authorities said the investigation focused on Denise Tracey's last-known whereabouts. She was last seen at home around 1:30 a.m. A search of William Tracey's room reportedly led to the recovery of "significant forensic evidence," though the details of that evidence have not been released.
Tracey has pleaded not guilty to second-degree murder, which carries maximum penalty of 25 years to life imprisonment.
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