North Korean leader Kim Jong-un may visit Beijing as early as Tuesday to meet Chinese President Xi Jinping. 

Citing sources close to the matter, Japan's Nikkei newspaper reported on Tuesday that relevant security measures were observed being made in the Chinese capital. 

If Kim visits Beijing, it would be his third trip to China this year following his meetings with Xi in March and May. 

The newspaper said that Kim would use the trip to share the details of his historic summit with U.S. President Donald Trump and discuss bilateral cooperation with China, adding that Kim appears to be looking to discuss a negotiation strategy as Washington and Pyongyang prepare to hold high-level talks to follow up on their Singapore summit.

[Photo : YONHAP News]