The secretary's journey is intended to follow up on summit deals between President Donald Trump and the North's leader Kim Jong-un in Singapore on June 12.

He's likely to meet Kim and senior North Korean officials in the first high-level face-to-face contact between the two sides since the Singapore event.

"We think he will make a two-day visit to North Korea," Foreign Ministry spokesman Noh Kyu-duk said at a press briefing. "We hope for good discussions to pull off the speedy implementation of denuclearization and various other issues addressed at the North Korea-US summit."

Noh added consultations are under way for the South Korean foreign ministry's visit to Japan for a trilateral meeting with Pompeo and Kono.

If the session is held, Pompeo will likely brief them on the results of his third-known trip to the North and exchange views on the next steps.

The secretary flew into Seoul right after the June 12 summit between the North's leader Kim Jong-un and President Donald Trump in Singapore. He met with Kang and Kono at that time.

The regional powers have striven to demonstrate close cooperation on the North Korea issue, during times of sharp tensions and the ongoing dialogue phase. (Yonhap)