It sounds like the guns belonged to the brother of Ritchie German, 33, from the Chippewa Falls area.
On Saturday German used a handgun to shoot 3 family members in the head: his mother, 66, with whom he had lived since 2004; his brother, 32, and his brother's son, age 8. All were gunshot fatalities.
On Sunday night he used a shotgun to blow open the door of the residence of the Vang family, after texting Laile Vang, a 24-year-old woman. Law enforcement stated that German's text to Laile Vang was "of a sexual nature", and she had replied "Who is this?". He used the shotgun to wound the mother and father of Laile Vang, before killing her with a head-shot, and then killing himself.
German left his car running in the driveway of the Vang residence. Law enforcement stated that in the car they found a handgun and handcuffs, which suggested that German's motive may have been to abduct Laile Vang.
Like the recent 88-day abduction of Jamie Closs in NW Wisconsin, this is close to my hearth and home.