Singaporean Prime Minister Lee Hsien Loong (R) meets with Kim Jong Un, chairman of the Workers' Party of Korea (WPK) and chairman of the State Affairs Commission of the Democratic People's Republic of Korea (DPRK), in Singapore, on June 10, 2018. (Xinhua/Then Chih Wey)

Singaporean Prime Minister Lee Hsien Loong met with Kim Jong Un, chairman of the Workers' Party of Korea (WPK) and chairman of the State Affairs Commission of the Democratic People's Republic of Korea (DPRK), here on Sunday.

Kim is here for the summit with U.S. President Donald Trump which is scheduled for Tuesday at the Capella Hotel on Singapore's Sentosa Island.

It will be the first meeting between a sitting DPRK top leader and a sitting U.S. president.

The U.S. president is expected to arrive in Singapore on Sunday evening.