Pyongyang has sent a letter to the UN Security Council accusing Seoul of fabricating a landmine explosion that injured three South Korean soldiers, according to North Korea’s state Korean Central News Agency, as cited by Al Jazeera.

The letter was delivered on Sunday by the country’s permanent representative to the UN and describes the incident as “a sinister obstructive move to brand as a ‘military invasion’”, saying that South Korea’s claims are a “farce to evade the responsibility for the ever-escalating tensions on the Korean peninsula”. Last week, South Korea’s foreign ministry had sent a letter to the Security Council president calling on the North to take responsibility for the landmine blast in the Demilitarized Zone, the Korea Herald reported. Seoul blames a September 21 explosion in the Demilitarized Zone on North Korean mines.