Police in New York City have arrested a 15-year-old girl in the shooting and stabbing deaths of her mother and her mother's common-law husband.

Chief of Detectives Robert Boyce said the teen told investigators her mother had been abusive.

She was charged Monday with two counts of murder and weapons possession.

The bodies of 39-year-old Rosie Sanchez and 40-year-old Anderson Nunez were discovered Sunday in their fifth floor Brooklyn apartment.

Police say Sanchez suffered multiple gunshot wounds. They say Nunez was found in the kitchen with gunshot and stab wounds.

Police say responding officers discovered the bloody scene after the public housing apartment's door was left ajar.