Cameroon coach, Volker Finke, was left frustrated with his side's display and called the behaviour of his players a disgrace for the country.
Cameroon lost 4-0 to Croatia and had to play large parts with 10 men after Alexandre Song got send off. However, the talking point was Benoit Assou-Ekotto’s attempt to head but his own teammate in stoppage time.
"It's unimaginable. I saw this happen and I need to find out exactly what happened, why exactly these two players exploded," Finke said after the game.
"I hate to see that. It's not the image of Cameroon I want to project."
The incident almost continued in the tunnel, but injured striker Samual Eto’o stepped in the way of Assou-Ekotto.
Cameroon’s second defeat means the Africans are already eliminated from the tournament and have now failed to reach the second round of the World Cup in their last five attempts.
"I apologise for the result, it really hurts," added Finke.
"We had no control on the game and I didn't like the behaviour of my team. We have to look forward - this team has players for the future."
Croatia 4-0 ensures they have it in their own hands to qualify for the next round when they face Mexico in their last Group A match.
"We have to rest up well - the boys used up a lot of strength today," said Croatia coach Niko Kovac.
"Then we'll go into what is effectively a final for us and will do everything we can to progress."
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