NEW : But supporters of the military in Tahrir Square remained adamant that that should n't happen . At least 20 people were killed , Egyptian media reports . The Muslim Brotherhood 's party says peaceful protesters were slain . Egypt 's Interior Ministry says hundreds of rioters were killed . Hundreds jumped into the Nile to escape arrest .
NEW : At least 20 people were killed , Egyptian media reports . The Muslim Brotherhood 's party says peaceful protesters were slain . Egypt 's Interior Ministry says hundreds of rioters were killed . Hundreds jumped into the Nile to escape arrest .