I guess when Algeria’s captain Mehdi Lacen and Libya’s captain Ahmed Saad read a pregame message to fans regarding sportsmanship their teammates didn’t bother to listen.
When the African Cup of Nations qualifier reached full time, Ali Salama of Libya tried to attack Algeria’s Rafik Djebbour. Chaos ensues. Like in all soccer fights very few punches were thrown. Actually more running around happened than anything. (Fight starts at the 2:20 mark)