Nigeria, April 8 -- Unknown gunmen have attacked a third police station in Imo State, Nigeria's South-east, in less than 72 hours.

The attack occurred in the early hours of Thursday at the Mbiere Divisional Police Headquarters in Mbaitoli Local Government Area of the state, The Punch newspaper has reported.

Two similar attacks, including the one at the police headquarters and the prisons headquarters in the state, have taken place before now.

The second attack was carried out a few hours after the Vice President Yemi Osinbajo, accompanied by the then Inspector General of Police, Mohammed Adamu, visited the state to assess the damage done to the police headquarters.

During the latest attack, the gunmen reportedly freed some suspects fr...