State police said the couple's 18-year-old son found the bodies of 52-year-old Jeffrey Miller and 47-year-old Dana Miller in their Jackson Township home. Dana Miller had been living in nearby Cranberry Township during their separation.
According to police, Dana Miller had been shot several times before her estranged husband fatally shot himself. Their bodies were discovered about 5:40 p.m. Wednesday.
Autopsies were scheduled Thursday, but police were treating the shooting as a murder-suicide and stressed there was no threat to the surrounding community.