SEOUL (Reuters) - South Korea's National Intelligence Service (NIS) chief Park Jie-won said on Saturday that North Korea may conduct a nuclear test between South Korean president-elect Yoon Suk-yeol's inauguration on Tuesday and U.S. President Joe Biden's visit to Seoul later this month, Yonhap news agency reported.

       If North Korea miniaturises and lightens its nuclear warheads, short-range missiles can also be equipped with nuclear warheads, and the potential nuclear test is being viewed as very important because it could threaten both South Korea and Japan, Park told Yonhap in a phone call.

       (Reporting by Joyce Lee; Editing by William Mallard)