A 41-year-old Trempealeau County provided federal prosecutors with the evidence that is sending him to prison. Levi A. Robb took a picture of himself while he sexually assaulted a 10-year-old girl two years ago. W-K-B-T / T-V reports Robb was arrested when the victim accused him of assaulting her when she was between five and seven years old. U-S District Court Judge William Conley told Robb his conduct was “reprehensible beyond words” while sentencing him to 18 years in prison. Robb had entered a guilty plea last January.