'We have some views' how M bovis got into NZ - Ardern

Prime Minister Jacinda Ardern says "we have a window, let's use it," in announcing an $886 million M bovis eradication plan. "We have some views," as to how M bovis got into NZ, she tells Guyon Espiner. MPI is investigating the theories. Could there be prosecution? "That's something I'll leave to MPI."