North Korean leader Kim Jong-un met a special delegation of South Korean President Moon Jae-in yesterday, possibly reaffirming his commitment to establishing peace on the Korean Peninsula and denuclearising his country.

"The special delegation met Chairman Kim Jong-un to deliver a personal letter (from Moon) and exchange their opinions," Seoul's presidential office Cheong Wa Dae said in a brief statement to South Korean News Agency (Yonhap).

The statement came after Chung Eui-yong, top security adviser to Moon and head of the presidential National Security Council, arrived in the North on what is still expected to be a one-day trip.

Chung earlier said he hoped to meet with the North Korean leader during his one-day trip to Pyongyang but that no such arrangements had been made.

The North Korea trip by Moon's special envoy is largely aimed at making arrangements for what would be a third inter-Korean summit between Moon and Kim.

Chung and the four other members of the South Korean delegation currently in North Korea visited Pyongyang in March for a meeting with the North Korean leader that eventually led to the historic summit between Moon and Kim in the border village of Panmunjom on April 27.

They held their second bilateral summit in Panmunjom on May 26, which was followed by a historic summit between U.S. President Donald Trump and Kim in Singapore on June 12.

Moon and Kim have already agreed to meet in Pyongyang this month.

"First, the delegation will seek to set a specific date for the South-North summit that the countries have already agreed to hold in Pyongyang in September," Chung told a press briefing Tuesday.

"Second, it will discuss ways to develop South-North Korean relations by implementing the Panmunjom Declaration."