An Idaho man has been charged with killing four of his neighbors on Fathers Day after a teen allegedly masturbated in front of the mans family, according to an arrest affidavit.

Majorjon Kaylor, 31, said he snapped during an argument Sunday with the neighbors in Kellogg, Idaho, claiming that 18-year-old Devin Smith had exposed himself, was shaking his penis, and masturbating through a ground-floor window in front of Kaylors wife and daughters, police said in the affidavit.

According to police, Kaylor said he fatally shot Kenneth Guardipee, 65; his daughter, 41-year-old Kenna Guardipee; and her two sons, Devin and 16-year-old Aiken Smith, at around 7 p.m. Both of the Guardipees and Aiken appeared to have been shot once in their right temples at point-blank range with a semi-automatic handgun, investigators said, while Devin Smith suffered multiple gunshot wounds to his head.