He pointed out that the North Korean leader's half brother was "cruelly" assassinated at a Malaysian airport two weeks ago. The minister did not mention the names of Kim Jong-un or his half brother Kim Jong-nam.

But it marked the first time that a top South Korean government official raised the murder case on the global stage.

Two Asian women allegedly rubbed VX nerve agent on his face.

The substance is classified by the UN as a weapon of mass destruction.

South Korea's intelligence community believes that the Kim Jong-un regime, notorious for its reign of terror, is behind the killing. Kim has apparently viewed Jong-nam as a potential obstacle to his pursuit of a life-time authoritarian rule, according to North Korea watchers.

Yun took issue of the North's worsening human rights record, calling it a potential threat to peace and security of the whole world.

He added that more than 100 senior North Korean officials have been executed without proper trials over the past five years.

Besides that, 80,000-120,000 people remain held at concentration camps in the communist nation.

"The entire country of North Korea has become a vast concentration camp," he said.

He emphasized that the member states of the council should take "independent and collective" steps to address the North's human rights abuse before it's too late and triggers a bigger catastrophe.

He welcomed a group of experts' recommendation that the UN bring the human rights issue to the International Criminal Court. (Yonhap)