Jon Yong Chol said that South Korean and US intelligence agencies had ordered him to return to the country to blow up statues and monuments, in a bid to make it appear that North Korea was suffering internal unrest, ANI reported.
While South Korea has denied the allegation as groundless, a government official dismissed the idea as an “improbable plot”.
The North Korean Foreign Ministry said in a statement that by backing the plot, the US had violated a deal with Pyongyang to pull back on its nuclear programme.
“The situation forces us to completely review the nuclear issue,” the Los Angeles Times quoted the ministry, as saying.
A failed North Korean rocket launch earlier this year, widely believed to be a cover for testing its ballistic missile technology, had reportedly spurred fears that the country would turn next to a nuclear test, as it did after unsuccessful launches in 2006 and 2009, the paper said.