The AFL acted in a very brutal and scorched-earth fashion, which quickly alienated the local people. The rebel invasion soon pitted ethnic Krahn sympathetic to the Doe regime against those victimized by it, the Gio and the Mano. Thousands of civilians were massacred on both sides. Hundreds of thousands fled their homes. The Monrovia Church massacre was carried out by approximately 30 ethnic Krahn government soldiers, killing 600 civilians in St. Peter's Lutheran Church, Monrovia, on 29 July 1990, the worst single atrocity of the First Liberian Civil War.