Cameroon coach `disgusted` after player head-butts teammate

Manaus, Brazil: Cameroon`s FIFA World Cup campaign sunk into ignominy Wednesday when Benoit Assou-Ekotto head-butted teammate Benjamin Moukandjo during their 0-4 loss to Croatia.

The pair had to be separated by striker Pierre Webo after clashing in the 90th minute of the one-sided encounter at the Amazonia Arena. After the match, a furious Cameroon coach Volker Finke vowed to ascertain the cause of the incident, reports Xinhua. "It`s clear we have to find the reasons what`s going on because such behaviour is really disgusting. It won`t do, it`s impossible," Finke said. Earlier, midfielder Alex Song was shown a straight red card for elbowing Croatian striker Mario Mandzukic in the back. The result means the `Indomitable Lions` are eliminated from the tournament despite a group match against Brazil to come. Cameroon`s disastrous campaign follows a series of off-field controversies that blighted their preparations for the event. The squad almost refused to board the flight to Brazil over a pay dispute while their star striker Cameron Eto`o has faced allegations about his personal life. Eto`o vowed Tuesday to "respond to all accusations" and "reveal names" after the World Cup. The capitulation against Croatia was Cameroon`s sixth straight World Cup loss. They have managed just one World Cup victory - a 1-0 win over Saudi Arabia in 2002 -since becoming the first African nation to make the tournament`s quarterfinals in 1990.