A Former Knoxville Police Officer With Ties To A Woman In Scott County Virginia Who Is Facing Federal Child Pornography Charges, Has Plead Not Guilty. Dan Roark Was Fired Earlier This Month. He Was Arraigned This Week In U.S. Federal Court In Knoxville. He Was Arrested After An Investigation By Federal And State Agencies. Investigators Claim Roark Was Found To Have Been In Direct Contact With A Juvenile Victim And Their Mother In Scott County. The Affidavit States The Mother Was Paid By Roark For The Images She Provided Him. She Is Also Facing Charges.