A pair of explosions on the South Korean side of the Demilitarized Zone last month escalated inter-Korean tensions and set off a scramble to determine what had happened, with Seoul concluding this week that “deliberately buried” North Korean mines caused the blasts that wounded three soldiers.

To help readers understand the Sept. 21 explosions and their aftermath, NK Pro has prepared a timeline tracing the full chronology of events, from North Korea’s work to fortify the border beginning in 2024 to the events surrounding the explosion, the joint investigation into its causes and the DPRK’s response. [/p