I am quite familiar with this area. It is located an hour's drive east of Pittsburgh in the "Laurel Highlands" mountainous area of Western Pennsylvania. The Appalachian Trail passes through here. At 2500 ft. elevation, these are old mountains. But there are several large ski resorts in the immediate area of this shooting.
The local word, now confirmed in MSM it that the victims (4 dead, 1 injured) were drinking in a local bar located in Donegal, PA - which is maybe 5 mi. or so from where this happened. The killer, who was still enamored with one of the victims despite having been thrown over by her, ran into the group at the bar on Saturday night. Words were exchanged between the killer and a male victim who was with the ex-girlfriend. The killer "placed hands on" the new boyfriend (who happened to be a newlywed with a pregnant wife) and was ejected from the bar by management. The others stayed on at the bar drinking.
The killer then apparently went home and got his guns. State police say they have issued subpoenas and will examine cell phone records to attempt to determine exactly how the killer lured the victims to the shooting site. The surviving female victim, who crouched in the rear seat of an extended cab pickup truck as the killer shot the two front seat passengers, surely will be able to provide some answers.
There is no question the victims were lured to their deaths. Two victims arrived first, got out of their vehicle and were shot as they approached the killer's vehicle. The other two victims arrived on the scene just then and were shot while still inside their vehicle.
This is a small, insular type of area where everybody seems to be related. People are either step-siblings or cousins. The kind of area where you would never want to say a bad word about anyone, because you likely are talking to a relative of the person. BUT they will freely bad-mouth each other.
Such a shame that four young people are dead. Both female victims were single mothers of young children.
Jealousy, alcohol and guns do not mix.