"Had a good trip to Pyongyang to meet with Chairman Kim. We continue to make progress on agreements made at Singapore Summit. Thanks for hosting me and my team," Pompeo said on Twitter.
READ MORE: Pompeo Hopes Pyongyang Trip to Result in Next Trump-Kim Summit Date, Location
On Second North Korean-US summit
During the meeting in Pyongyang, the US state secretary and North Korean leader agreed to create a joint working group to discuss in the near future the denuclearization of the Korean peninsula and another possible North Korean-US summit, the South Korean presidential office said on Sunday.
"State Secretary Pompeo announced that the two parties had agreed to set up a working group in order to decide on the schedule of the denuclearization process and the US-North Korean summit in the near future," Yoon Young-chan, the senior presidential secretary for public affairs, said.
According to the South Korean presidential office, Pompeo and Kim agreed to continue consultations in order to decide on the venue and the date for the holding of the second US-North Korean summit in the near future.
The second summit between US President Donald Trump and Kim was said to be a key topic on Pompeo's agenda during the trip to Pyongyang to advance the existing efforts to denuclearize the Korean peninsula.
Later on Sunday, Pompeo will fly to South Korea to brief its president and foreign minister on the results of the talks, before traveling on to Beijing for a meeting with Chinese officials.
In June, US President Donald Trump and Kim Jong-un held their first official summit in Singapore. Upon the conclusion of the talks, the two countries signed a bilateral agreement outlining their joint commitment to work toward the denuclearization of the Korean peninsula. However, the agreement did not specify steps or deadlines as to when would denuclearization be achieved.