New Delhi, April 7 -- South Korea's spy agency says it's now fair to view the teenage daughter of North Korean leader Kim Jong Un as his heir, its strongest assessment yet on the rising political status of the girl who it believes could extend her family's rule into a fourth generation.

The girl, dubbed by state media as Kim's "most beloved" or "respected" child, has accompanied her father to numerous high-profile events since late 2022, sparking outside speculation that she's being groomed as the North's future leader.

In a closed-door briefing at the National Assembly Monday, South Korea's National Intelligence Service director Lee Jong-seok said the girl could be considered Kim's successor, in response to questions by lawmakers about...