Kim Kyong Hui, Kim Jong Un’s aunt and wife of the recently executed Jang Song Thaek, has been in Switzerland since mid-December, the Japanese TV station TBS said on Wednesday, citing South Korean government sources.

Kim Kyong Hui, 67, flew to Switzerland on a special plane after Jang was publicly executed for treason on December 12, the station said.

More than one South Korean government officials said Kim Kyong Hui may be staying there for medical treatment for an unspecified disease and saw the possibility that her health is deteriorating, TBS reported.

Kim Kyong Hui, the younger sister of