North Korean leader Kim Jong-un's sister Yo-jong is rumored to have married a senior official.

Radio Free Asia on Tuesday cited an ethnic Korean in China who visited North Korea on Sept. 10 as saying he heard from a high-ranking official in a trading company that Kim Yo-jong is married.

The source added that the official told him that Kim Yo-jong's husband works for the Workers Party's Room 39, which manages Kim Jong-un's slush funds, but he was not able to get detailed information about him and when they got married.

Ahn Chan-il at the World Institute for North Korea Studies also heard through a different route that Kim Yo-jong got married. He said that North Korea's ruling elite has a custom of holding weddings on national holidays and Kim Yo-jong probably tied the knot on Sept. 9, North Korea's founding day, or Oct. 10, the anniversary of the Workers Party.

Kim Yo-jong was appointed to a key party position and the official [North] Korean Central News Agency recently named her ahead of Ri Jae-il, a senior party official in charge of propaganda. Previously she was listed after him. This led to speculation that she had been appointed to a very powerful position.

There are also rumors that Kim Yo-jong married a member of her brother's security detail.

The National Intelligence Service said during a National Assembly audit on Tuesday that it had received unverified intelligence about her marriage.