NEW : Three arrested American students identified . Egypt 's prime minister appealed for calm and asked protesters to return to their homes Tuesday following four days of violence in Cairo and a day after the nation 's Cabinet offered to resign . ` The three Americans were detained in the city of Hangzhou on suspicion that they had illegally entered China and taken part in a protest against China's human rights record. Prime minister appeals for calm , asks protesters to return home . Official : Twenty-nine people have been killed since Saturday , 1,785 injured . Some political factions plan a `` million man sit-in '' on Tuesday .
NEW : Three arrested American students identified . The three Americans were detained in the city of Hangzhou on suspicion that they had illegally entered China and taken part in a protest against China's human rights record. Prime minister appeals for calm , asks protesters to return home . Official : Twenty-nine people have been killed since Saturday , 1,785 injured . Some political factions plan a `` million man sit-in '' on Tuesday .