North Korea‘s nuclear test site has been turned into a wasteland where babies are born with defects, defectors have reported.

Defectors from Kilju county, where the Punggye-ri underground nuclear test facility is located, have said 80 per cent of trees that are planted die and underground wells have run dry.

The witness accounts come from a group of 21 defectors who used to live in the region who were interviewed by the Research Association of Vision of North Korea, according to the South Korean Chosun Ilbo newspaper.

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One defector said people in the region are worried about contamination from radiation.

“I heard from a relative in Kilju that deformed babies were born in hospitals there,” another said.

Another former resident, referring to the regime’s most recent nuclear test, said: “I spoke on the phone with family members I left behind there and they told me that all of the underground wells dried up after the sixth nuclear test.”

Kim Jong-un inspects weapon North Korea says is powerful hydrogen bomb Show all 6 1 /6 Kim Jong-un inspects weapon North Korea says is powerful hydrogen bomb Kim Jong-un inspects weapon North Korea says is powerful hydrogen bomb Photos released by North Korea show Kim Jong-un talking to subordinates next to a device thought to be the new thermonuclear weapon. There is no way of independently verifying the pictures STR/AFP/Getty Images Kim Jong-un inspects weapon North Korea says is powerful hydrogen bomb North Korea claims it has successfully tested an advanced hydrogen bomb which could be loaded onto an intercontinental ballistic missile AFP/Getty Kim Jong-un inspects weapon North Korea says is powerful hydrogen bomb A diagram on the wall behind Mr Kim shows a bomb mounted inside a cone STR/AFP/Getty Images Kim Jong-un inspects weapon North Korea says is powerful hydrogen bomb North Korean leader Kim Jong-Un (C) attending a photo session with participants of the fourth conference of active secretaries of primary organisations of the youth league of the Korean People's Army (KPA) in Pyongyang STR/AFP/Getty Images Kim Jong-un inspects weapon North Korea says is powerful hydrogen bomb A new stamp issued in commemoration of the successful second test launch of the "Hwasong-14" intercontinental ballistic missile KCNA via Reuters Kim Jong-un inspects weapon North Korea says is powerful hydrogen bomb A new stamp issued in commemoration of the successful second test launch of the "Hwasong-14" intercontinental ballistic missile KCNA via Reuters

The defectors, which include one person who claimed to have experienced two nuclear tests in October 2006 and May 2009, said locals were not warned in advance.

“Only family members of soldiers were evacuated to underground shafts,” they said. “Ordinary people were completely unaware of the tests.”

Other sources said residents from Kilju have been banned from making hospital appointments in the capital, Pyongyang, since the most recent nuclear test.