Nigeria, April 5 -- The Abia State Government on Monday imposed a curfew in the state capital, Umuahia, and the state's commercial city of Aba, hours after hoodlums suspected to be members of the pro-Biafra group, IPOB, and its security arm, the Eastern Security Network (ESN) launched daring attacks on police and correctional service headquarters in the neighbouring Imo State.

Abia and Imo States are in Nigeria's South-east region.

The South-east and South-south regions have witnessed a spate of deadly and worrisome attacks on police officers and police facilities of late.

A statement by the Commissioner for Information in Abia State, John Kalu, said the curfew in the two cities is between 10 p.m. and 6 a.m. daily and is to begin on Ea...