The South Korean government on Friday called on activist groups to “immediately" stop flying anti-DPRK leaflets into North Korea, warning them that doing so would “directly" violate the spirit of last week's Panmunjom Declaration.

The statement from the Ministry of Unification (MOU) comes as NGOs insist they will send the balloons over the weekend, in defiance of Seoul’s calls on Tuesday for them to refrain from making the launches.