Christian militias stormed a U.N. base in southern Central Africa Republic early on Monday, killing one peacekeeper and wounding 11, the United Nations said. At around 5 a.m. (0400 GMT), armed anti-balaka militants attacked the base in Tagbara, about 300 km (190 miles) northeast of the capital Bangui, a U.N. statement said. The ensuing gunfight lasted hours, and 22 anti-balaka were also killed, the statement said. Later in the morning, peacekeepers discovered 21 dead civilians, including four children, near a church in Tagbara. It was not immediately clear who was responsible for those deaths.