A security officer was killed and two more were injured when suicide bombers attacked the University of Maiduguri (UNIMAID) on Sunday night.

Victor Isuku, spokesman of the Borno State Police Command, confirmed the incident via a Whatsapp group managed by his office. But he said details of the attacks were still sketchy.

“Let’s not speculate yet,” Isuku wrote. “At Unimaid only one male suicide bomber died; three university security personnel (were) injured, among which [sic] one later died.”

Also Danjuma Gambo, spokesperson of the institution, confirmed to the BBC Hausa radio on Monday that three suicide attacks took place in the university on Sunday night.

The first blast occurred at about 10:15 pm, and as it was being confirmed when  second and louder explosion was heard at exactly 11 pm.

According to residents of the area, the second blast was followed by hours of shootings and sounds of military vehicular movements.

Eid-el-fitri prayers had been conducted without any ugly incidents earlier on Sunday and residents praised security agencies for their efforts at keeping them safe.

The police in Bornohad announced total restriction on vehicular movements during the Sallah prayers.

UNIMAID was first attacked in January this year, and there have been four other suicide attacks in the institution since then.

A professor of veterinary medicine was among the casualties in the first attack, which took place in a mosque located within the school premises.