North Korea has blown up a building used to facilitate dialogue with its southern neighbour as tensions on the peninsula continue to rise.

South Korean officials said an inter-Korean liaison office building just north of the border in the town of Kaesong between the two countries, had been destroyed on Tuesday.

North Korea had earlier threatened to demolish the building as it stepped up its rhetoric over Seoul’s failure to stop activists from flying propaganda leaflets across the border.

Some experts say North Korea is expressing its frustration because Seoul is unable to resume joint economic projects due to US-led sanctions.