Man sentenced to at least 38 years in prison for killing his grandmother Melanie Clark, 62, was robbed and shot in March 2018 Joshua Dimitri Clark robbed and shot his grandmother in March 2018. (Source: Rowan Sheriff's Office) By David Whisenant | January 14, 2021 at 12:27 PM EST - Updated January 14 at 12:27 PM ROWAN COUNTY, N.C. (WBTV) - Joshua Clark of Rowan County will spend at least the next 38 years in prison for the murder of his grandmother in March 2018. In Rowan County Criminal Superior Court this week, Clark pleaded no contest to second degree murder, robbery with a dangerous weapon, possession of a firearm by felon, and possession of a weapon by prisoner.