At least 10 people were feared dead on Wednesday after an suspected suicide bombing rocked a teacher training college in northwest Nigeria as students were sitting exams, police and a student said.
The blast happened at the Federal College of Education in the town of Kontagora, Niger state, some 150 kilometres (90 miles) from the state capital, Minna.
There was no immediate claim of responsibility but the explosion happened just two days after nearly 50 students were killed in a suspected Boko Haram suicide bomb attack at a school in the northeastern state of Yobe.
That massacre was one of the worst in the five-year insurgency against a school teaching a secular curriculum, to which the Islamists are opposed.
Niger State police spokesman Ibrahim Gambari confirmed the blast by telephone from Minna, saying commanders were awaiting further details from officers on the ground.
“We have dispatched our teams from here,” he told AFP.