Officers responded around 11 p.m. to the 3700 block of Burwood Avenue.
At the scene, police found Juanita Rosario, 75, unconscious in her bedroom. She was later pronounced dead.
The Gloucester-Camden-Salem County Medical Examiner ruled her cause of death to be asphyxia and manner of death to be a homicide.
Esteban Cabrera, 30, of Pennsauken was arrested on Sunday in connection with Rosario's murder.