The Nigerian Correctional Service (NCoS) has confirmed that 16 inmates escaped from the Medium Security Custodial Centre in Keffi, Nasarawa State, during the early hours of Tuesday.
In a statement from Abuja, Service Public Relations Officer Abubakar Umar said the incident occurred after inmates breached security at the facility, attacked staff on duty, and created an opportunity for the breakout.
Five personnel sustained injuries while trying to contain the situation, with two in serious condition receiving treatment at a government hospital.
Umar reported that seven of the escapees had been recaptured and returned to custody. He added that the Controller-General of Corrections, Sylvester Nwakuche, visited the centre and ordered a full investigation.
Mr Nwakuche warned that any staff found negligent would face sanctions and confirmed that a joint search operation with other security agencies was underway to apprehend the remaining fugitives.
The NCoS urged the public to stay calm but remain alert, and to report any suspicious activity to nearby security formations.