Officers went to the apartment on West 167th Street in Washington Heights just after 10 p.m. after getting a 911 call about an assault.
They found 50-year-old RamonaRodriguez-Reynoso unconscious and unresponsive in a bathtub with a gunshot wound to her head.
She was pronounced dead at the scene by EMS.
Police said Rodriguez-Reynoso lived with her boyfriend, who they are now searching for.
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