An unidentified gunman opened fire near a school in the northeastern Nigerian city of Potiskum in Yobe state; at least 12 students were seriously injured, according to a local police officer.
"We have evacuated 12 people with serious gunshot wounds to hospital from the scene of the shooting attack," the officer said.
Witnesses, for their part, said that they saw explosives strapped to the gunman's body and that he blew himself up the moment when he ran out of ammunition; no one was hurt by the explosion.
