19/06/2014 05:15 BST | Updated 19/06/2014 05:59 BST

Cameroon 0-4 Croatia: Benoit Assou Ekotto Headbutts Benjamin Moukandjo (Gif)

Cameroon's World Cup promised acrimony the moment players refused to travel to Brazil over a bonus row, and during their 4-0 thrashing at the hands of Croatia left-back Benoit Assou-Ekotto headbutted teammate Benjamin Moukandjo.

benoit assou ekotto headbutt

Moukandjo reacts after Assou-Ekotto headbutts him

Alex Song had earlier been sent off for elbowing Mario Mandžukić, and in the heat of Manaus' Arena Amazônia the violence continued. Assou-Ekotto turned on Moukandjo and the pair had to be separated by Pierre Webó.

GIF: Cameroon player headbutts teammate on Twitpic(GIF via @cjzero)
Benoît Assou-Ekotto headbutts Benjamin Moukandjo .. his own t... on Twitpic

Cameroon became the third team to be eliminated from the finals, after Australia and holders Spain.

The Indomitable Lions lost their opening match 1-0 to Mexico and face hosts Brazil on Monday.