Franklin County prosecutors want to try a 15-year-old boy accused of shooting a 17-year-old girl earlier this week as an adult. Police say Tayon Dunson shot and killed Shevona Whitehead on the South side. He pleaded not guilty to delinquency charges yesterday. Witnesses say the gun Dunson was carrying may have fired accidentally, but police say his decision to flee the scene tells a different story. Dunson was on probation for two violent attacks.