Crazy headbutt
Matters worsened when full-back Benoit Assou-Ekotto aimed a headbutt at teammate Benjamin Moukandjo in the dying moments following a furious row.

"It's disgusting and I don't like it," said the German coach.

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"We will need to talk to certain players. The behaviour of some of them was not at all satisfying. It's unacceptable to see that kind of thing."

Cameroon, who made the World Cup quarter-finals in 1990 but have not got out of the group stages since, were also beaten 0-1 by Mexico in their opening Group A game in Brazil.

The team were involved in a dispute over bonuses before the tournament. They refused to get on the plane to Brazil until guarantees were made.

Cameroon will have nothing but pride to play for when they end their campaign against the hosts on Monday.

"I am really disappointed by the result. The players conducted themselves badly and that is why they conceded four goals. I know it's difficult to play 10 against 11 but that's no excuse to lose control," added Finke.