(Salem, OR) -- Oregon hunters have illegally brought chronic wasting disease into the state. The Oregon Department of Fish and Wildlife reports three hunters killed deer in Wyoming and brought pieces back with them, including the skulls with brain material or meat still attached. After returning to Oregon, Wyoming officials told them tests showed two of three deer were positive for the disease. Carcasses can spread chronic wasting disease, if not disposed of properly. Illegal transport of animals with the disease is the most likely way it will come to Oregon.