President Muhammadu Buhari on Monday met behind closed doors with retired general, Theophilus Danjuma, at the presidential villa, Abuja.
General Danjuma was the Minister of Defence during the administration of former President Olusegun Obasanjo.
General Danjuma has become one of the critics against the administration of President Buhari on the state of the nation, especially on insecurity.
The News Agency of Nigeria (NAN) reports that the agenda of the meeting between the president and the visiting elder statesman, whose last visit to the State House was over three years ago, was unknown.
Mr Danjuma did not speak to State House correspondents on the outcome of his meeting with the president.
NAN, however, gathered that the president and Mr Danjuma may have deliberated on domestic and sub-regional issues bordering on security and socio-economic development in the country.
NAN reports that the president also met with the Minister of Niger Delta Affairs, Godswill Akpabio.
Mr Akpabio also declined comment on the outcome of his meeting with the president.