The U.S. is preparing for North Korea to transfer an unspecified number of remains of American soldiers killed during the Korean War within the next couple of weeks, a U.S. military official in Seoul told NK News in a phone interview on Tuesday.

The two sides appear close to starting the transfer process after working-level talks headed by the UN Command (UNC) on Monday, but the military official said the U.S. still requires additional discussions to work out logistical details. The official wished to remain anonymous as, while the efforts are multi-departmental, the U.S. State Department officially has the lead on communications.