US President Donald Trump meets DPRK leader Kim Jong-un, Feb 28, 2019, in Hanoi. (EVAN VUCCI / AP)

WASHINGTON/SEOUL - The Democratic People’s Republic of Korea’s state media acknowledged a fruitless summit between its leader Kim Jong-un and US President Donald Trump for the first time on Friday, saying people were blaming the United States for the lack of an agreement. 

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"The public at home and abroad that had hoped for success and good results from the second DPRK-US summit in Hanoi are feeling regretful, blaming the US for the summit that ended without an agreement," Rodong Sinmun, the newspaper of the North's ruling Workers' Party, said in a commentary. 

The public at home and abroad that had hoped for success and good results from the second DPRK-US summit in Hanoi are feeling regretful, blaming the US for the summit that ended without an agreement

 Rodong Sinmun

The newspaper also accused of being "desperate to interrupt" relations between Pyongyang and Washington and "applauding" the breakdown of the summit. 

After the summit collapsed, US ally Japan focused on skepticism about the future of the nuclear diplomacy given how the two sides failed to bridge the gap. 

New activity has been detected at a factory that produced DPRK's first intercontinental ballistic missiles (ICBMs) capable of reaching the United States, the Republic of Korea's JoongAng Ilbo and Donga Ilbo newspapers reported, citing lawmakers briefed by the National Intelligence Service. 

This week, two US think-tanks and Seoul's spy agency said the DPRK was rebuilding its Sohae rocket launch site, prompting Trump to say he would be "very, very disappointed" if it were true. The think tanks said on Thursday that they believed the launch site was operational again. 

READ MORE: Bolton: Trump open to further talks with DPRK

White House National Security Adviser John Bolton, however, said Trump was still open to further talks. 

The Vietnam summit on Feb 27-28 collapsed over differences about how far the DPRK was willing to limit its nuclear program and the degree of US willingness to ease economic sanctions.