Ko Yong-Suk, who effectively vanished in 1998, had in fact been granted US political asylum, South Korea's JoongAng Daily said, citing a former senior intelligence official and a South Korean diplomat based in Berne at the time.
The newspaper said Ko, who would now be 56, and her husband had cosmetic surgery to conceal their identities and remain under the protection of the US authorities.
Kim Jong-Un attended an international school in Berne from 1996-2001 and Ko had been sent to care for him during his studies there.
"The United States spirited away the couple without even informing us," the unidentified intelligence official said.
They were first taken to a US military base in Frankfurt and then flown to the United States.
Ko is the younger sister of Kim's mother Ko Yong-hui who died from breast cancer in 2004 aged 51.
Few immediate members of the ruling Kim dynasty live overseas.
The most notable exception is Kim's elder half-brother Kim Jong-Nam, who was once considered heir apparent, but who fell out of favour with his father Kim Jong-Il following a botched attempt in 2001 to secretly enter Japan and visit Disneyland.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
