South Korea's unification ministry is urging North Korea NOT to take actions that could heighten tensions on the Korean Peninsula after Pyeongyang slammed Seoul for not stopping activists from sending anti-regime leaflets across the border.
In a statement Sunday, Seoul's unification ministry reiterated its commitment to inter-Korean agreements and its efforts to build peace on the Peninsula.
It also said it's conducting an investigation with the relevant authorities into the leaflets that were sent across the border last week.
South Korea has banned the sending of such leaflets into the North, but this was the first time the activists have successfully defied the ban.
Earlier in the day, Kim Yo-jong, the sister of North Korean leader Kim Jong-un, denounced South Korea for failing to stop the leaflets.
She called it a serious provocation, and said the North will look at taking corresponding action.