Rape charges are brought against a man from rural Mansfield man after an investigation into an incident last month. Police say Riley Jay Kalk sexually assaulted the victim at his home then broke into her home the next day and sexually abused her at gunpoint. Kalk was arrested on suspicion of first-degree rape, unlawful imprisonment, residential burglary and 10 counts of unlawful possession of a firearm. He is being held on $100,000 bail.