SINGAPORE, June 12 (Yonhap) -- U.S. President Donald Trump and North Korean leader Kim Jong-un took a walk near the Capella Hotel, their summit venue, in Singapore after a working lunch Tuesday, local media reported.

The Straits Times reported that the two leaders were seen chatting while strolling around the hotel, while the content of their talks remains unknown.

Their historic summit focused on Pyongyang's denuclearization in return for Washington's security assurances.