investigation along with dozens of members of the muslim brotherhood party. they reportedly are barred from leaving the country. and party members have been arrested by security forces. cnn's senior correspondent is in cairo, watching all of this unfold. what is the latest, ben, that you're seeing? >> reporter: well, what we're seeing is that cairo on a thursday night is celebrating more than usual in tahrir square. once again, jam-packed. the celebrations continuing. of course, the city is bracing for the possibility of trouble tomorrow. the muslim brotherhood supporters will be holding demonstrations and marches in the city. we've heard of clashes in the delta, where according to some media reports as many as two people have been killed. there were fights outside cairo university, as well, wolf, between supporters and opponents