5/4/17 – State corrections’ officials are investigating the death of a convicted murderer at the Waupun Correctional Institution. Christopher O’Kroley died Monday night at the prison where the 27-year-old was serving a life term for shooting his former co-worker Caroline Nosal to death outside the Metro Market in Madison 15 months ago. According to police, Nosal told her bosses that he was harassing her, and he blamed Nosal for getting him fired a short time later. W-I-S-C T-V in Madison quoted the victim’s mother as saying O’Kroley killed himself. The date of his death would have been Caroline Nosal’s birthday.