(FILES) A file photograph showing Supreme Commander of the Korean People's Army Kim Jong Il, general secretary of the Workers' Party of Korea and chairman of the National Defence Commission of the Democratic People's Republic of Korea, inspects the Duck Farm No. 115, on Sunday 06 November 2005. North Korea has followed through on its threat and successfully conducted an underground nuclear test on Monday 09 October 2006, according to the North?s official Korean Central News Agency. South Korea said the country?s state intelligence agency detected a 3.58 magnitude seismic tremor in the eastern remote area of North Hamgyeong province at (0136 GMT), reported South Korea?s Yonhap news agency. EPA/KCNA /ANSA/DEB