After a week of speculation about the whereabouts of North Korean leader Kim Jung Un, national security adviser Susan Rice said Sunday the U.S. does not believe there has been any transfer of power in the country. “We have not seen any indications of a transfer of power at this point in North Korea that we view as definitive,”Rice said on NBC's "Meet The Press." “But we'll continue to watch it carefully.”

Rice did not say the U.S. had ruled out the possibility Kim had been demoted, but did not have any concrete evidence about the situation. Kim has not been seen in public since Sept. 3. He did not appear at two major events including a government meeting Sept. 25 or the founding anniversary of the ruling Workers' Party of Korea on Oct. 9.

Although Kim has not been seen in more than a month, his two top aides showed up in South Korea Oct. 2 at the closing ceremony of the Asian Games. The aides met with the South Korea's prime minister, its unification minister and the president's national security adviser, Kim Kwan-jin.