Senior South Korean officials, including Second Deputy Chief of the Presidential National Security Office Nam Gwan-pyo, are also staying in Shangri-La Hotel - U.S. President Donald Trump's temporary residence ahead of tomorrow's summit.
The JoongAng Ilbo said North Korea and the United States, when their officials met in NY and elsewhere to prepare for Tuesday's Trump-Kim summit in Singapore, also agreed on the need for additional summits.
It will be the first ever meeting between a sitting U.S. President and North Korean leader.
Meanwhile, officials from North Korea and the US met for working-level talks in Singapore at 1000 local time, a diplomatic source familiar with the issue confirmed to NK News on condition of anonymity.
Trump's arrival came just hours after Kim, wearing his trademark dark "Mao suit" and distinctive high-cut hairstyle, landed in the ultra-modern city-state on his longest trip overseas as head of state.
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The North's official KCNA news agency called the summit "historic", saying it would take place in a "changed era" and "under the great attention and expectation of the whole world".
Trump has said he wants to strike a deal to get the North to give up its nuclear weapons.
"Thanks PM Lee for spending $20 million of taxpayers money, which can. help a lot of needy families in Singapore to survive", posted one Facebook user.
Sources told CNN that USA officials have established a contingency plan for a potential second day of discussions between Trump and Kim depending on the direction of their planned meeting on June 12.
Trump and Kim are set to meet at 9 a.m. Tuesday in Singapore, which is 9 p.m. Monday on the U.S. East Coast. She emerged as an influential figure in Pyongyang's opaque leadership in February, when she led a North Korean delegation to the Winter Olympics in South Korea.
But many say this is highly unlikely, given how hard it has been for Kim to build his program and given that the weapons are seen as the major guarantee to his holding onto unchecked power.
Mr Kim was driven to the city centre on Sunday in a stretch Mercedes-Benz limousine accompanied by a convoy of more than 20 vehicles.
Previous year it carried out by far its most powerful nuclear test to date and launched missiles capable of reaching the United States mainland, while Trump threatened the North with "fire and fury" and Kim dubbed him a "mentally deranged USA dotard".