There are indications that President Muhammadu Buhari has fired all service chiefs Monday.
The hint was dropped by the special adviser to the President on media, Femi Adesina, while speaking to state House correspondent at the Presidential Villa in Abuja.
Adesina said simply that the President had removed the service chiefs but gave no further details. He said that their replacements would be announced later.
The sacked military chiefs are Alex Badeh, Chief of Defence staff; Kenneth Minimah, Chief of Army Staff; Usman Jibrin, Chief of Naval Staff and Adesola Amosu, Chief of Air Staff.
They were all appointed into office by former President Goodluck Jonathan.
There had been a spike in attacks by Boko Haram insurgents in the North east, leading to the killing of more than 500 people since the new administration came into power.