The Abolongo Correctional Centre in Oyo town, Oyo State was on Friday invaded by gunmen.
It was gathered that the gunmen attacked the facility with explosives around 10.30pm and set the inmates free.
A search by security operatives for the fleeing inmates has begun.
It was gathered that the attackers used grenades to gain access and set prisoners free.
Spokesman for the Nigerian Correctional Service (NCS) in the state, Olanrewaju Anjorin confirmed the attack on Saturday.
Anjorin in a telephone conversation said that the senior officers of the agency were on their way to access the level of damage.
He said, “Yes. It has been confirmed that the attack actually happened.
“And right now, the comptroller of Nigerian Correctional Service (NCS) and other top officers are assessing the situation.
“But, I can confirm to you that the incident actually happened.”