A 6-year-old boy was killed and his father critically wounded after marshals for the central Louisiana city of Marksville fired at their vehicle as the father was trying to flee, officials said Wednesday. Coroner L. J. Mayeux of Avoyelles Parish identified the driver as Chris Few and his son as Jeremy Mardis, a first grader, who died from multiple gunshot wounds to his head and chest. Dr. Mayeux said city marshals were chasing Mr. Few on Tuesday night after he fled an attempt to serve a warrant.