The blast took place near where students gathered ; police said three people were wounded . No group has claimed responsibility for the attack . Police suspect Boko movement , which has targeted schools teaching Western culture . In February , Boko Haram gunmen killed at least 40 students when they opened fire and threw explosives in student hostels in a government boarding school in the town of Buni Yadi , in Yobe state . The group 's five - year insurgency is aimed at establishing an Islamic state .
The blast took place near where students gathered ; police said three people were wounded . No group has claimed responsibility for the attack . Police suspect Boko movement , which has targeted schools teaching Western culture . The group 's five - year insurgency is aimed at establishing an Islamic state .