In this handout image provided by South Korean Presidential Blue House, South Korean President Moon Jae-in (Right) hugs with North Korean leader Kim Jong Un (Left) before their meeting on Saturday.
A spokesman for Moon Jae-In, the South Korean president, said details of the surprise meeting would soon be revealed.
Pictures released by the Blue House showed Moon also shaking hands with Kim's sister Kim Yo Jong, who has played a major public role in recent talks with the South, including leading a delegation across the border during February's Winter Olympics.
While the U.S. did not announce the delegation's members, The Washington Post reported earlier Sunday that Sung Kim, a former USA ambassador to South Korea and former nuclear negotiator with the North, had been called in from his posting as envoy to the Philippines to lead the preparations.
Asked about the summit, Trump said Friday: "We'll see what happens, it could even be the 12th", referring to the June 12 date originally set.
"Both sides still leave some maneuver for a discussion", Wang said Friday on a panel at the St. Petersburg International Economic Forum in Russian Federation.
Earlier on Friday, speaking to reporters outside the White House in Washington, the United States president indicated that the summit could still be salvaged, saying: "We're gonna see what happens".
The highly anticipated summit between President Trump and Chairman Kim Jong-un in June will have been a golden opportunity to avert nuclear standoff and provide the much-needed peace and stability in a highly vulnerable region of the world.
North Korea hardened its rhetoric toward the US on Thursday, lashing out after remarks by Vice President Mike Pence and the White House national security adviser, John Bolton, that had linked the country to Libya.
Trump blamed the cancellation on the "tremendous anger and open hostility" in a recent statement by the North Koreans.
Trump on Friday night said the historic June summit with Kim could go ahead following talks between the two countries.
He also added, "We're talking to them now".
State Department spokeswoman Heather Nauert told reporters in Annapolis, Maryland, on Friday, that "we are working on plans going forward".
Kim Kye Gwan said North Korea appreciated Trump for having made the bold decision to work towards a summit.
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