Federal child pornography charges have been filed against an Aledo man. 35 year old Joaquin Cook is in U.S. Marshals Service custody. The federal case against Cook was released last week. He has pleaded not guilty to the charges with a pre-trial conference set for March 23rd at U.S. District Court in Rock Island. The child pornography charges were the result of a theft investigation in late November where Cook was accused of stealing items from the Aledo Walmart.