NEW : Suspect ##ed with a single charge of kidnapping . The bus was traveling to Charlotte , North Carolina . The gunman approached the bus driver and allowed many passengers to get off the bus . Police were trying to find a motive for the shooting .
NEW : Suspect charges with a single count of kidnapping . The bus was traveling to Raleigh , North Carolina . The gunman approached the bus driver and allowed many passengers to get off the bus . Police were trying to determine a motive for the incident .