Cairo - Egyptian state TV has raised the death toll to 73 after fans of rival soccer teams rushed the field, hurling stones and sticks at each other and sparking a stampede.
State TV cited the health ministry and says 1 000 other people were injured in Wednesday's melee.
A medical official, speaking on condition of anonymity because he wasn't authorised to release the information, says some of the dead were security officers.
Egypt's state prosecutor has ordered an immediate investigation into the causes of the deaths.
Witnesses say most appeared to have occurred in a stampede after fans of the home team, Al-Masry, stormed on to the field following a rare 3-1 win against Al-Ahly, Egypt's top team.
They then chased players and fans from the rival team.