1. A military officer, who pleaded anonymous. A colonel at Army Supply and Transport Division, Benin-City. 2019.
2. Adamu Mohammed, A. 50 years. A Maiduguri businessman interviewed in Maiduguri on June 5, 2014.
3. Ahmed, D. 36 years. A student of the Department of Education, Bayero University, Kano. Interviewed at Bayero University, Kano on October 8, 2014.
4. Alhasssan, A. A trader at Kanti-Kwari Market, Kano. Interviewed in Kano on June 5, 2014.
5. Chukwuma, A. 54 years. An Igbo businessman interviewed in Maiduguri on January 20, 2019.