Former Sierra Leone international John Jebbor Sherington has been appointed caretaker coach.
Mali battled to a draw against Uruguay and Senegal had kept their hopes alive with a 2:1 win over Qatar
Equatorial Guinea ranked in top 50 in latest Fifa world rankings.
Ghana defeated Panama to reach the top of Group B.
Nigeria produced a dominant second-half and thrashed North Korea.
U-20 WORLD CUP 2015 - GROUP C & GROUP D
Ghana survived a late fight-back to beat Argentina 3:2 in GROUP B.
FIFA president Sepp Blatter is being investigated by US officials
The Flying Eagles lost against Brazil.
Mali beat Mexico and Senegal lost against Portugal.
DAY 10
Match 35
Gabon vs Côte d'Ivoire 2:3
FACTS
Goals Gabon
G. Kanga (11')
D. Bouanga (21')
Goals Côte d'Ivoire
J. Krasso (44')
E. Guessand (84')
B. Touré (90'+1)
Assists Côte d'Ivoire
W. Zaha (44')
C. Opéri (84', 90'+1)
Côte d'Ivoire
Gabon