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The son of late President Anwar Sadat shakes hands with people and supporters of the army at his father's tomb in Cairo

Gamal al-Sadat (R), son of late President Anwar Sadat, shakes hands with people and supporters of the army at his father's tomb, during the 40th anniversary of Egypt's attack on Israeli forces in the 1973 war, at Cairo's Nasr City district, October 6, 2013. REUTERS/Amr Abdallah Dalsh

Violence as Egypt marks 40th anniversary of October 6 war

Clashes erupt as the country

celebrates the 40th anniversary of an Egyptian attack on Israeli forces.