SIOUX FALLS, S.D. (KSFY) - A man accused of possessing child pornography made a court appearance Monday.
Mark Ullrich turned himself in after an investigation by the Internet Crimes Against Children task force led police to his address.
Police found over 30,000 images on his computer, resulting in 25 counts of child pornography.
Police said the images included children between the ages of one and 10 years old.
Ullrich is being held on a $50,000 cash bond.