The powerful sister of North Korean leader Kim Jong-un criticized South Korean President Moon Jae-in for his remarks on the North during his inspection of a missile test.

President Moon on Wednesday observed an underwater test-launch of a submarine-launched ballistic missile(SLBM) and said South Korea's enhanced missile capabilities can help deter North Korean provocations. 

Kim Yo-jong said that Moon reportedly had a slip of the tongue by using the inappropriate term “provocation,” which is often used by hack reporters, and expressed great regret over the word.

In a statement carried by the Korean Central News Agency on Wednesday, Kim warned that if Moon joins criticism and false accusations, it will lead to corresponding action and inter-Korean relations will end up in catastrophe. 

She rejected speculations that North Korea is engaging in provocations, claiming that it is proceeding with normal and self-defensive activities under the country's five-year plan for defense and arms development.