SEOUL, U.S. President Donald Trump and North Korean leader Kim Jong-un are expected to hold a summit in Singapore probably on June 13, a former South Korean ruling party lawmaker said Thursday.

Choi Jae-sung, a former three-term lawmaker, told reporters that Singapore is seen as the most likely candidate for the venue for the historic summit. The two leaders may arrive in the Southeast Asian country on June 12, he added.

"I am not saying this with my imagination," Choi said. "There had been some reason that North Korea could not accept Singapore as the venue for the summit, but the North is known to have carried out their own assessments."

Trump earlier said that the venue and date for the summit will be announced soon. U.S. Secretary of State Mike Pompeo returned home early Thursday from Pyongyang where he arranged details of the meeting and brought home three Americans who were detained in the North.

Choi said that the two leaders are likely to mainly discuss North Korea's denuclearization, the issue of turning an armistice into a peace regime on the Korean Peninsula, and a possible establishment of diplomatic relations.

"Negotiations would be tricky as North Korea is calling on the U.S. to guarantee its regime in exchange for its dismantlement of nuclear programs," he added.

The upcoming summit follows the April 27 summit by South Korean President Moon Jae-in and Kim Jong-un. They agreed to seek "complete" denuclearization of the peninsula and formally end the 1950-53 Korean War.

Source: Yonhap News Agency