Leaders of the Chadian rebel movement say it never occurred, while nomads, after two years of scratching around in the area, have still not found a single cartridge case or other material evidence.

• 乍得反叛运动的领导人说那些事从来没发生过，游牧人在那个区域搜索两年仍然没有发现一个弹壳或是其他物证。