421 persons were killed and 3,572 persons injured in clashes which took place yesterday in Cairo and other Egyptian governorates. The Official Spokesman of the Egyptian Health Ministry, Dr. Mohamed Fathallah, said in a statement today that the deaths included 137 persons in Rabi'ah Al-Adawiyah square, 57 persons in Nahdhah square, 29 persons in Helwan, and 198 persons in the rest of Egyptian governorates.