In Nigeria, West Africa, a university was attacked by an armed group, removing dozens of students and faculty members.
In May, students were taken away from another school in the area, and human rights groups have expressed strong concern that it is becoming difficult to keep the school safe.
According to Nigerian media and others, an armed group attacked a university in northwestern Kebbi on the 17th, killing a police officer and taking away dozens of students and five teachers.
The next day, the army rescued five students and two teachers in a gun battle with an armed group, but found one female student dead.
Armed groups appear to be fleeing with other students.
In Nigeria, students were taken away in a state next to Kebbi on the 30th of last month, and 136 people are still being captured.
All cases are believed to have been committed for ransom, and the military and police are continuing to investigate.
In Nigeria, it has been pointed out that similar cases aimed at ransom have increased since the Islamic extremist organization Boko Haram took away more than 200 schoolgirls in 2014.
Amnesty International, an international human rights group, has expressed strong concern that more than 600 schools have been closed due to the difficulty of ensuring school security in northern Nigeria.