An inter-Korean agreement signed in April 2018 is now effectively "dead," a North Korean official said Saturday, insisting that Pyongyang will push ahead with plans to send thousands of propaganda leaflets into the South.

In a statement delivered by a spokesman for the North Korean ruling party's United Front Department (UFD) -- which oversees relations with the South -- the official dismissed pleas from Seoul not to carry out the planned leaflet campaign, which the South said would violate a 2018 inter-Korean agreement.