The visit is made when the historical meeting between the US and DPRK leaders is expected to take place in Singapore on June 12, Singapore"s Ministry of Foreign Affairs said in a statement on June 6.
Earlier on June 5, the White House announced that the summit will be held at Capella Hotel on Sentosa Island.
Preparations are underway in Singapore for the first summit between the top leaders.
Singaporean police said they will deploy security measures to prepare for the meeting, with the establishment of “special event areas” from June 10-14 around Capella Hotel under the Public Order Act.
Security will be tightened on streets surrounding these “special event areas” and people and vehicles travelling to these areas will be closely controlled.
In addition, the International Civil Aviation Organization (ICAO) and the US Federal Aviation Administration (FAA) issued on their websites a notice to airlines and pilots that airspace over Singapore will be temporarily restricted for parts of June 11, 12 and 13.
Flights arriving to Singapore Changi Airport will be required to reduce speed and face some restrictions on runway use "for reasons of national security", the notice said.-VNA