He said that North Korea, "by dangling the possibility of giving up nuclear weapons and calling for a post-summit summit", another meeting with Trump, is managing to drag out negotiations over the details of any denuclearization.
DPRK is the abbreviation of the authoritarian nation's official name, the Democratic People's Republic of Korea.
"It is a proud moment for the ITTF to be able to support another sign of peace on the Korean Peninsula, by helping North Korea send a team to the Korean Open", said ITTF president Tomas Weikert.
Pompeo and his team of US negotiators arrived in Pyongyang just before noon, where he was met by vice chairman of the Central Committee of the Workers' Party of Korea (WPK) Kim Yong Chol, foreign minister Ri Yong Ho, and director of department at the State Affairs Commission and Kim Jong Un's chief secretary Kim Chang Son.
Also high on the agenda is the issue of the remains of USA soldiers missing from the 1950-53 Korean War.
South Korea's Hur Jae, who captained his side during the defeat, is now returning to Pyongyang as a coach.
But just before Pompeo's arrival, the North's state-run media lobbed a warning shot at Washington over its criticism of the North's human rights record.
What position it will take on the nuclear issue appears to be anything but a done deal.
But that does mark a shift from the U.S.'s earlier demands for North Korea's "complete, verifiable, irreversible denuclearization".
Trump is said to have written a message on the CD for Kim.
The musical offering came at the behest of President Trump himself.
But it remains uncertain whether Japan will heed North Korea's call, as it continues to seek a comprehensive resolution of the nuclear, missile and abduction issues.
Late last month, 38 North, a USA -based North Korea watchdog, reported the North was making improvements at one of the country's nuclear research centres at a "rapid pace" despite Kim's pledge to denuclearize the Korean peninsula.
"We have a pretty good understanding of what [Kim] has, including some things that he's never acknowledged to the worldwide community before", Morell said. "I spoke with POTUS while we were both in the air". I really believe that he sees a different future for North Korea.
US Secretary of State Mike Pompeo is greeted by North Korean Director of the United Front Department Kim Yong-chol, and North Korean Foreign Minister Ri Yong-ho, as he arrives at Sunan International Airport in Pyongyang, North Korea, on July 6, 2018.
Trump, however, has continued to boast of the results of the summit, even in the face of skepticism from some USA lawmakers.
Pompeo, who is on a two-day visit to North Korea, is also presenting a letter from Trump, the newspaper said.
On Tuesday, Nauert walked that back, declining to give a timeline. It's unclear if Pompeo can get a definite answer from the North during this visit. Under their "Sunshine Policy", economic inducements from Seoul resulted in temporary rapprochement and summits in 2000 and 2007 with then-North Korean leader Kim Jong Il, the father of current leader Kim Jong Un.
Pyongyang is the first stop on his first around-the-world trip as America's top diplomat.