U.S. Markets closed
4 / 16

A police officer searches a supporter of Egypt's military after he passed through a metal detector at an entrance to Tahrir square as people gathered to celebrate the anniversary of an attack on Israeli forces during the 1973 war, in Cairo

A police officer searches a supporter of Egypt's military after he passed through a metal detector at an entrance to Tahrir square as people gathered to celebrate the anniversary of an attack on Israeli forces during the 1973 war, in Cairo October 6, 2013. REUTERS/Mohamed Abd El Ghany (EGYPT - Tags: POLITICS CIVIL UNREST)

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.