On the morning of 5 January 2024, the North Korean military fired more than 200 rounds of artillery shells into the Yellow Sea near the Northern Limit Line (NLL) — the de facto maritime border between North and South Korea — located less than 2 km (1 mi) from the South Korean islands of Yeonpyeong and Baengnyeong. The shells, fired between 0900 and 1100 local time (0000 and 0200 UTC), fell into the buffer area of the NLL. South Korean authorities then ordered residents of both islands to seek shelter before the South Korean military conducted retaliatory firing drills from the islands into the waters near the NLL. South Korean authorities reported that no civilians or military personnel were harmed due to the shelling.