Investigation still ongoing 

A third suspect is in custody following the deadly shooting that occurred on Saturday, June 15, at Old Settlers Park during Round Rock’s annual Juneteenth celebration, according to Police media channels.At approximately 11 p.m., on Saturday, July 6, Keshawn Leray Dixon, 18, was arrested in Killeen and transported to the Bell County Jail. He is charged with deadly conduct, a third-degree felony,…