N'DJAMENA- A landmine planted by Islamist group Boko Haram killed four Chadian soldiers on patrol near Chad's border with Niger on Saturday, two security sources said.
They were travelling in a vehicle that rode over the mine at Kaiga Kindji, in the Lake Chad region, which has been plagued by the militants since 2009.
The Nigerian-based Boko Haram wants to create a breakaway Islamic state in the region and once occupied an area the size of Belgium.