Disgraceful ref attack in German MMA bout

An MMA fighter has disgracefully attacked an unprepared referee during the main event of a fight card in Germany.

Wilhelm Otto objected to a punch to the back of the head from his opponent, and was also infuriated by a missed tap out attempt before his horrible response.

Nasufovic throws a punch. Pic: Getty

Immediately after losing the fight via submission to Nihad Nasufovic, Otto jumped to his feet, pushed the ref and then punched him twice before officials intervened.

Fans on social media labelled his antics at Aggrelin Cage Fight 'inexcusable' and 'unacceptable'.