Nigeria, Aug. 29 -- The Office of the National Security Adviser (ONSA) has called for "continued vigilance and appropriate precautionary measures in relation to potential security concerns in certain locations."

This was contained in a security advisory issued by the ONSA and shared with security agencies.

A copy of the document, seen by PREMIUM TIMES, states that the alert arose from the ongoing offensives, intelligence gathering and threat monitoring by security agencies in collaboration with local and international partners across the country.

The advisory dated 27th August referenced the killing of Islamic State West Africa Province (ISWAP) fighters, including their commander, Abubakar Mainok, as part of the achievements recorded i...