A professor of Veterinary Medicine, Aliyu Usman Mani, and three other people have died in an early morning attack on a mosque at the University of Maiduguri, Borno State.
That attack was only one of three bomb attempts around the university.
The Police Commissioner Damian Chukwu said a seven year-old suicide bomber carried out the attack in the mosque.
A male suicide bomber was also shot while trying to gain access into the university. His bomb exploded and killed him instantly.
State emergency agency NEMA said two suicide bombers blew themselves up at different gates to the university at around 05:25 local time.
About 15 persons were injured in the attack.