It is a notorious facility built to house suspected enemies of the regime in which torture, slave labor and sexual abuse have been reported.
Speaking of the intensification of the crackdown, a source said: “They are in a situation where they cannot even give an opinion.
“It’s even stricter because the administration is trying to gain discipline.”
The North Korean economy is believed to be suffering from restrictions on coronaviruses and recent flooding.
Kim Jong-un visited the Taechong-ri region on Friday, which was heavily damaged after 49 days of storms and heavy rains.
The disaster is said to have killed dozens of people, destroyed 17,000 houses and wiped out vast areas of crops.
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North Korea’s economy had become heavily dependent on goods smuggled from China.
Officially, North Korea has yet to report any cases of COVID-19.
However, in July, Kim Jong-un admitted that the deadly disease “could have entered” the country.
In the same month, Kaesong City was locked out for three weeks after a resident reported coronavirus-like symptoms.
Additional travel restrictions were imposed across the country around this time.
Kim Jong-un has reportedly been responsible for several brutal executions since coming to power.
In May 2015, Hyon Yong Chol, who had served as North Korea’s defense minister, was executed by anti-aircraft guns while family members were forced to watch.
Two years earlier, Kim Jong-un’s uncle, Jang Song-Thaek, had been killed after he allegedly tried to overthrow the government.
According to ‘Rage’, a new book on the Trump administration, his body was then exposed to warn others.
Mr Trump is said to have told the author, Bob Woodward, that Kim Jong-un personally informed him by “telling him everything”.