Chinese president Xi Jinping holds talks with North Korean leader Kim Jong Un in Dalian on May 7-8 2018.

The White House said on Saturday its pre-advance team for the U.S.-North Korea summit will head to Singapore as scheduled, signaling that the high-stakes meeting President Donald Trump abruptly cancelled just days ago could be back on track.

On Thursday, Trump called off the meeting, even as North Korea made a show of dismantling a nuclear test site. In a letter to North Korea's leader, Trump cited sharp words used by the North Korean officials about America denuclearization demands.