The Economic and Financial Crimes Commission (EFCC) is reportedly investigating an alleged N3bn arms purchase contract.
The latest investigation comes on the heels of the investigation of the immediate former National Security Adviser, Dasuki Sambo over alleged fake contracts awarded to the tune of $2.1 billion.
The latest investigation is into some contracts awarded by yet another National Security Adviser, late General Andrew Azazi.
The Nation reports that some officials who served alongside General Azazi are being quizzed over the award of contracts while Azazi was NSA.
A retired Air Vice Marshal, Salau Atawodi has been arrested in connection with the investigation