A 78-year-old man shot his son and daughter-in-law before turning the gun on himself in New Hanover Township in Pennsylvania in an apparent case of murder-suicide, the Montgomery County authorities said. 

On Monday night officers found Gerald Mihalcik dead from an apparent self-inflicted gunshot wound. 

Rebecca Evans, 51, was also found dead. Gerald’s son, Stephen Mihalcik, 56, was found alive. 

Paramedics took Stephen to Reading Hospital where he died during treatment. 

Authorities said all three adults lived in the home with Stephen and Evans’ two children. 

District attorney spokesperson Kate Delano said one of the children was a young adult and the other a juvenile. 

It remains unclear if the two children were at home at the time of the murder-suicide incident. Delano said neither of the children were hurt in the incident. 

Autopsy results revealed Evans was shot once in the head, it was a homicide. However, Gerald was also shot in the head; his death was ruled a suicide. 

An autopsy was conducted on Stephen on Tuesday and it was determined he died from multiple gunshot wounds to the head. His death was ruled a homicide.