The Riverton Police Department shared the following statement:
On Thursday, March 26, 2020 at approximately 5:09 A.M. Officers of the Riverton Police Department responded to the 1300 block of E. Sunset for a report of a self-inflicted gunshot to a male subject from Riverton. Upon investigation, a 37-year-old male from Riverton identified as Mario Mills was arrested for the 1st Degree Murder of the subject. Also arrested during the course of the investigation was 43-year-old Courtnie Mills of Riverton for Accessory After the Fact.