Nigeria school blast 'kills 47 students' in Potiskum
At least 47 students have been killed by a suicide bomber at a school assembly in the north-eastern Nigerian town of Potiskum, the BBC reported, citing police.
The explosion at a boys' science and technical school in the town is believed to have been caused by a suicide bomber dressed as a student.
Militant group Boko Haram is believed to be behind the blast, police said.
The group has targeted schools during a deadly five-year insurgency campaign to establish an Islamic state.
Boko Haram - which translates as "Western education is forbidden," is waging a sustained campaign to prevent children from going to school.
It believes girls should not attend school and boys should only receive an Islamic education.