North Korean leader Kim Jong-un has arrived in Dandong, China, on a visit to the neighbouring country via a newly opened bridge, South Korea's Yonhap news agency reports, citing a South Korea government source.
A spokesperson for South Korea's unification ministry did not have an immediate comment on Saturday.
China's foreign ministry did not immediately respond to a request for comment.
China and North Korea officially opened their most significant land border crossing in Dandong earlier in October, aiming to rejuvenate trade and commerce after years of strained ties and pandemic-related disruptions.
Kim's last known visit to China was in September 2025, to attend the 80th Victory Day celebrations in Beijing, when he held a summit with Chinese President Xi Jinping.
Xi made a state visit to North Korea in June, in a sign of improving ties.
US President Donald Trump has been eager to jump-start talks with North Korea, but US and South Korean officials see fading chances of him meeting Kim in 2026, Reuters reported on Friday.
China hosts a summit of the Asia-Pacific Economic Co-operation forum in November in Shenzhen, which Trump is expected to attend.