The returnees who crossed into Nigeria through the Sahuda Border were received at Burn Bricks Transit Camp in Mubi South local government area of Adamawa State.
The incident, the third in less than two weeks, has increased fears in the school environment with students and staff members expressing worry over the frequency of the attacks.
Ezugwu made the remarks on Wednesday while delivering a farewell speech to soldiers and officers of the division, following his redeployment to Nigerian Army Depot, Zaria, Kaduna State in the recent shake up in the Nigerian Army.
The National Emergency Management Authority, NEMA, has said that five persons were killed and eleven others injured in three separate suicide attacks in Maiduguri on Wednesday.
Three female suspected suicide bombers were on Monday killed in Maiduguri, the Borno State capital, after they tried to infiltrate the city and cause havoc.
Officials say five other innocent individuals were wounded in the attack that occurred as Muslim worshippers were observing early morning prayers in the Jiddari Polo axis of the town.
According to BOSEMA chairman, Ahmed Satomi, this is the first time IDPs are writing WAEC examination since they were forced out of their homes by Boko Haram insurgents at different times in 2014.
Abdullahi called on citizens of the state who longed to return to their homes to be careful and not live in areas that are not well secured by the army as the insurgents now kidnap people and force them into becoming jihadists.
Five male suicide bombers attacked three different locations, including a tiny Internally Displaced Persons, IDP camp, in Maiduguri, Borno State, on Wednesday, leading to the death of three other persons.
This website also learnt that four soldiers, including a Lieutenant, not five as reported, were killed in the attack. The fifth victim was a policeman with the Special Anti-Robbery Squad stationed in the town.