A new round of U.S.-North Korea working-level talks on denuclearization was likely to be held this month or early next month, the South's Yonhap news agency reported Monday, quoting Seoul's spy agency, with leader Kim Jong Un eyeing a December summit with U.S. President Donald Trump.

South Korea's National Intelligence Service (NIS) told a closed-door parliamentary audit session that it "expected the working-level talks to resume no later than early December," Rep. Lee Eun-jae of the main opposition Liberty Korea Party was quoted as saying.

"As the two sides identified each other's stance in their Stockholm talks in October, the time appears to be coming for them to launch full-fledged consultations," Lee said.