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Armed groups attacked villagers in Chad in September 2005. Several dozen were killed, with estimates ranging from 36^[1] to 75.^[2] Chad blamed Janjaweed forces in what was allegedly a cross border operation.^[2] This and subsequent operations then led to a deterioration in relations between Chad and Sudan.^[3]

• Chadian Civil War (2005–2010)
• Chad–Sudan relations