The Namyangju Massacre (Korean: 남양주 민간인학살[2] Hanja: 南楊州民間人虐殺[1][2] Namyangju civilian massacre[1][2]) was a massacre conducted by the South Korean Police and local militia between October 1950 and early 1951 of more than 460 people, including at least 23 children under the age of 10 in Namyangju, Gyeonggi-do district of South Korea.[4][1][2] After the victory of the Second Battle of Seoul, South Korean police arrested and killed people and their families who they suspected had been sympathizers during North Korean rule.[5] During the massacre, South Korean Police conducted Goyang Geumjeong Cave Massacre in Goyang near Namyangju.[6]