The Defence Headquarters (DHQ) has insisted its personnel in charge of the closed circuit television (CCTV) were awake when suspected bandits invaded the Nigeria Defence Academy (NDA) in Kaduna on Tuesday.
During the attack, two officers were killed, while another was abducted.
Some reports claimed those monitoring the CCTV fell asleep during the incident.
However, in its statement on Wednesday, DHQ said “the allegation is untrue”.
DHQ spokesman, Benjamin Sawyerr, said: “It is perhaps important to mention that the AFN as a professional force consists of highly trained personnel who are dedicated to their duties of protecting the lives and property of all Nigerians.
“Let me use this opportunity to reiterate that the NDA authorities, acting on the directive of the Chief of Defence Staff has constituted a board of enquiry to ascertain the remote and immediate cause(s) of the breach of security with a view to sanction any personnel found culpable and also prevent future occurrence.
“Let me also assure that we shall continue to update the general public as events unfold as we are all aware the search and rescue of the abducted officer is still on.
“Troops of the Armed Forces of Nigeria will continue with its operations to ensure all those involved in the dastardly act are brought to justice.”