NEW : Health minister : The contaminated alcohol contained a `` potent poison '' NEW : A province governor says the alcohol came in unlabeled bottles . Officials announce a 72-hour national dry law . Score: 6
NEW : Health minister : The contaminated alcohol contained a `` potent poison '' NEW : A province governor says the alcohol came in unlabeled bottles . Officials announce a 72-hour national dry law . 21 deaths are reported in Los Rios province .