On Friday , activists in Tahrir Square encircled the 15 protesting officers and soldiers as they walked through the crowd , protecting them from arrest or possible attacks . NEW : one Fifteen Egyptian officers are forced to leave the square , a witness says . The number of demonstrators swells as the Supreme Council joins in . Groups are seeking prosecution of former President Mubarak . Hosni Mubarak 's chief of staff has been arrested .
NEW : one Fifteen Egyptian officers are forced to leave the square , a witness says . The number of demonstrators swells as the Supreme Council joins in . Groups are seeking prosecution of former President Mubarak . Hosni Mubarak 's chief of staff has been arrested .