Yes, but this incident was all political. You didn't read my article, did you?
The fans of this one team were the strongest group who had fought for the "revolution" against Mubarak (his military is still in power, killing and torturing demonstrators). In this game, mysterious instigators attacked them, claiming to be fans for the other team, and the military/police let it go on and on, killing 74 of the group which was and is critical of the military.