(Spotsylvania)- Investigators are still looking to find who killed three people in a Spotsylvania County home last week. The Chief Medical Examiner of Virginia said yesterday that the victims were all stabbed in the neck. It’s been a week since deputies discovered a man, his girlfriend and her teenage son dead in an Arlene Acres Drive. They say that an infant and toddler were probably left alive because they wouldn’t be able to explain anything.