Little collage for a homebrew Shadowrun adventure I'm running.

Alpenrose County is home to a remote industry town in Montana, Sioux Nation. Established by the "GoodMorning! Farms" cattle ranch company, an oasis in an otherwise abandoned wilderness that supplies organic cattle produce, highly sought-after by the few that can afford it.

However, seemingly overnight, the otherwise peaceful town and the surrounding areas had become, for the lack of a better term - haunted. Hostile spirits rise every night, terrorizing any and all they can find unlucky enough to be caught outside, all the while accompanied by an eerie signal overtaking the radio waves. Come morning, the haunting subsides, only to start once again when the sun sets. What brought upon this strange calamity and what can be done to stop it?