KANO: A police official says a female teenager has carried out a suicide attack in Nigeria’s northern city of Kano. Kano state police commissioner Aderenle Shimanaba said the attack targeted graduates at a polytechnic school. He said no one claimed responsibility for the attack, the fourth carried out by a female suicide bomber in the past week in Kano.

Isa Ahmed, a security guard, said he saw six bodies after the blast. Ibrahim Ado Daneji said his brother died Thursday after being injured in the attack.