The conflict has forced more than 2,000 schools to close in Nigeria, Cameroon, Chad and Niger.
The country is part of a 8,700-strong task force comprising troops of Chad, Niger, Nigeria and Benin, aimed at destroying Boko Haram.
Suspicion is likely to fall on Islamist militant group Boko Haram, which frequently uses suicide bombers to hit soft targets.
The Nigerian militant group's violence is increasingly spilling over borders, displacing tens of thousands of people.
The Nigerian militant group killed 6,644 people in 2014, and continued its wave of destruction this year.
Let's not forget the horrific terror group taking lives in northern Nigeria.