Okezie Ikpeazu, Abia state governor, has imposed a curfew on Umuahia and Aba metropolis of the state between 10pm and 6am.
He said the decision is a result of security reports received from multiple sources.
The governor did not give details of the security reports but said there is a “need to continue to protect innocent citizens and residents of the state”.
There have been a series of attacks on security officials and government facilities in south-east states in recent weeks.
In the early hours of Monday, inmates were freed as gunmen attacked a federal correctional facility and police command in Imo state.