President Muhammadu Buhari on Monday, October 10,
No details of the meeting were given to journalists present at the Villa.
Obasanjo and Buhari have held a series of secret meetings since the latter assumed office on May 29, 2015.
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The first one held on August 7, 2015, the second on September 8, 2015, the third on November 10, 2015, the fourth on April 7, 2016 and the fifth on July 25, 2016.