Norristown Murder-Suicide

A cause of death has been determined for the mother and daughter found dead in their Norristown home on Thursday.   Investigators say 40-year-old Donna Smith and her four-year-old daughter both died of intentional drug overdoses.   The manner of death remains classified as a murder-suicide.   An empty bottle of prescription medicine was found at the scene.   There was also a suicide note.   Neighbors say that Smith was a recent victim of domestic abuse and may have been upset about an upcoming custody hearing.