Abdullahi Mohammed

Abdullahi Mohammed is a retired Nigerian Army major general, who served as chief of staff to presidents Olusegun Obasanjo and Umaru Musa Yar'Adua from 1999 to 2008; National Security Adviser to General Abdusalami Abubakar from 1998 to 1999; Director General of the National Security Organization from 1976 to 1979; and Governor of Benue-Plateau State, Nigeria from July 1975 to February 1976 during the military regime of General Murtala Mohammed. Provided by Wikipedia