North Korean leader Kim Jong-un's vehicle was spotted leaving the St. Regis Singapore hotel on Monday night. 

Kim went on a mini-night tour of Singapore, according to The Straits Times.

Kim Jong-un’s sister Kim Yo-jong and Ri Su-yong, Workers’ Party vice chairman on international affairs, were accompanying Kim Jong-un on his tour of the city, it said.

The report added that Kim Jong-un’s first stop was Gardens by the Bay's Flower Dome.

Singapore’s Foreign Minister Vivian Balakrishnan later posted a picture on his Facebook account taken with Kim Jong-un and Singapore’s Education Minister Ong Ye Kung. They appeared to be at Gardens by the Bay.

Kim was also seen at the Marina Bay Sands SkyPark.

Singapore’s Foreign Minister Vivian Balakrishnan (left) posted a picture taken with North Korean leader Kim Jong Un (center) and Education Minister Ong Ye Kung on his Facebook account Monday (Vivian Balakrishnan's Facebook)

Kim Jong-un's vehicle is seen leaving the St. Regis Singapore on Monday night. (Yonhap)

Photo taken on Monday shows a night view of Singapore. The much-anticipated meeting between U.S. President Donald Trump and Kim Jong Un, top leader of the Democratic People's Republic of Korea (DPRK) is to start here on Tuesday. (Xinhua-Yonhap)