A Minnesota truck driver serving life in prison for murdering six northern Wisconsin deer hunters last fall is no longer a suspect in the unsolved slaying of a deer hunter in Clark County four years ago, an investigator said Tuesday. Chai Soua Vang was working as a truck driver in the Twin Cities on the day James Southworth was shot, said Kerry Kirn, a detective with the Clark County Sheriff's Department. Southworth, 37, of Medford, was shot twice in the back near his tree stand on family land near Neillsville on Nov. 23, 2001, during the nine-day deer hunting season....