African Nations Cup: Cameroon eye last eight after Idrissou winner

Zambia had taken the lead inside ten minutes through Jacob Mulenga but a terrible mistake from Zambia goalkeeper Kennedy Mweene allowed Geremi to equalise and Samuel Eto'o gave Cameroon the lead in the 72nd minute.

Christopher Katongo thought he had earned a point for his side with an 82nd-minute penalty, but Idrissou had the last word four minutes later.

Cameroon went into the match looking to ignite their campaign after a shock 1-0 defeat by Gabon in their opening match, which was also a first loss for manager Paul Le Guen, the former Rangers manager.

However, in only the eighth minute Felix Katongo swung in a great cross from the left and, in attempting to head behind, Rigobert Song instead drew a point-blank save from his own goalkeeper, Carlos Kameni, who could only push the ball out to Mulenga, who was left with a tap-in.

It wasn't until the 68th minute that a calamitous mistake from Mweene saw Cameroon draw level. Geremi sent in a hopeful cross from the right wing that the Zambia keeper inexplicably helped into his own net.

The turnaround was complete four minutes later thanks to Eto'o. With Zambia appealing for handball, the striker collected Somen Tchoyi's cross and fired into the far corner.

However, Kameni handed Zambia a way back into the match with his own rash goalkeeping, scything down Mulenga on the left edge of his penalty area to concede an 82nd-minute spot-kick, which was coolly dispatched by Christopher Katongo.

There was another twist to come, though. Four minutes later, Geremi swung in a free-kick from near the halfway line and Idrissou headed home.

Gabon remain top of Group D but missed out on the chance to qualify with a game to spare when they were held to a 0-0 draw by Tunisia in yesterday's other match.