Seoul accuses Pyongyang of causing a landmine explosion that injured three of its soldiers, an accusation North denies. North Korea accuses South Korea of fabricating claims over a landmine blast that injured three soldiers, while defending its border fortifications and warning of. North Korea fired at least one ballistic missile, Seoul's military said on Saturday, after blaming Pyongyang for an explosion in the Demilitarised Zone (DMZ) that wounded three South Korean soldiers.