Update at 1800 KST: The article has been amended to include further updates on Kim Hyok Chol’s travel.

U.S. Special Representative for North Korea Stephen Biegun is on his way to Vietnam for talks expected to finalize preparations for next week’s U.S.-DPRK summit, the State Department said in a statement on Tuesday evening.

While no further details of his itinerary were given, Biegun is likely to meet with his North Korean counterpart Kim Hyok Chol in the coming days.

The talks will be the most high-level DPRK-U.S. meetings since a three-day trip by Biegun to Pyongyang between February 6 and