A Circle, Montana man has been convicted on charges in a child pornography case. The jury took less than a hour to find 39-year-old Matthew Stoney Olson guilty on the charges of receipt and possession of child porn from April to June 2015. Olson is looking at a minimum of five to 20 years in prison on just the receipt count. Sentencing has been set for February 15th and the court did continue his release. The trial started Monday and was held in U.S. District Court in Billings.