He was a graduate of the University of Conakry and an army school in Thies, Senegal. He and several military officials were killed on February 11, 2013, when their CASA 235 crashed near the town of Charlesville, near Harbel, Liberia, about 8 kilometers away from Roberts International Airport.
On 11 Feb 2013 a CN-235 crashed into a forest 45km south of Monrovia, Liberia, 8km to Roberts International Airport, killing 11 people amongst them Souleymane Kelefa Diallo Guinea army chief.