North Korean leader Kim Jong Un Kim Jong UnSatellite images indicate North Korea preparing for massive military parade South Korea warns of underwater missile test launch by North Korea Trump says he didn't share classified information following Woodward book MORE reportedly ordered the execution of several top officials in March after they were unable to reach an agreement with President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE at a second summit between the two leaders earlier this year.

Bloomberg News reported Thursday citing a South Korean newspaper that Kim Hyok Chol, North Korea's special envoy to the U.S., was executed in March along with four other North Korean foreign ministry officials involved in the Hanoi, Vietnam, summit.

A fifth official, Kim Jong Un’s top deputy, Kim Yong Chol, has reportedly been sentenced to hard labor, according to the newspaper.

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An unnamed North Korean source told the Chosun Ilbo newspaper that Kim Yong Chol and four other officials were executed at a North Korean airport for allegedly spying on behalf of the U.S.

“Kim Hyok Chol was investigated and executed at Mirim Airport with four foreign ministry officials in March,” the source said.

A North Korean state-run newspaper reportedly threatened consequences on Thursday for anyone who would "act" as if they were revering the country's leader, Kim Jong Un, while secretly harboring desires for change.

“Acting like one is revering the Leader in front (of others) but dreaming of something else when one turns around, is an anti-Party, anti-revolutionary act that has thrown away the moral fidelity toward the Leader, and such people will not avoid the stern judgment of the revolution," read an article in Rodong Sinmun, according to Reuters.

“There are traitors and turncoats who only memorize words of loyalty toward the Leader and even change according to the trend of the time,” the newspaper's commentary continued.