At 14:34 in Korean time, North Korea moved 22-mm Multiple Launch Rocket System shells towards an artillery place in Kaemori. Then it began firing on the island of Yeonpyeong. The firing went on 14:34 to 14:55 and again from 15:10 to 15:41. Many of the shells destroyed homes and shops. When they saw this, South Korea used 15mm self-propelled howitzers to fire about 80 shells at the North. The firing ended at about 16:42. It was the first artillery battle between North and South Korea since the 1970s. It was thought to be one of the most serious attacks by the North on the South since the Korean War ended.