SEOUL, South Korea (AP) — South Korea's military has dispatched a naval unit in waters off Somalia after pirates reportedly hijacked a South Korean fishing vessel. An official from the Defense Ministry says the fishing vessel lost contact after sending a message that "something is following the back of the ship." The official spoke on condition of anonymity, citing office rules. The official says South Korea's anti-piracy Cheonghae Unit was participating in international operations to combat piracy in nearby waters before responding to the situation.