(Corvallis, OR) -- A Wilsonville man is pleading not guilty to more than a dozen child sex abuse charges. Thirty-five-year-old Corey Koch appeared in court yesterday following his arrest on Monday. Police say investigators found thousands of child pornography images on his cell phone along with photos of women in various states of undress photographed without their knowledge. Koch was initially arrested in April after he was allegedly caught peeping at a partially dressed woman through the window of a Corvallis home.