PRETORIA, November 12. /TASS/. An explosion in a college in north-western Nigeria has killed at least 10 people Wednesday. According to Nigerian police representative Ibrahim Gambari, the blast went off during exams in the Kontagora college.

“At least 10 students were killed and several others injured. They have all been moved to the general hospital,” one of the witnesses as quoted by the Nigerian media.

On Monday, a suicide bomber killed more than 50 people in a school in Potiskum.

Last week, the explosion by a suicide bomber in the same city of Potiskum claimed the lives of 30 people.

The terrorist attacks in northern Nigeria are often organized by Boko Haram terrorist group.