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Protesters throw stones during clashes outside the Ministry of Defense in Cairo, Egypt, Friday, May 4, 2012. Egyptian armed forces and protesters clashed in Cairo on Friday, with troops firing water cannons and tear gas at demonstrators who threw stones as they tried to march on the Defense Ministry, a flashpoint for a new cycle of violence only weeks ahead of presidential elections. (AP Photo/Ahmed Gomaa)

Egypt imposes curfew, lockdown

Egypt's military has imposed a new curfew after 300 people were detained following deadly clashes with anti-army protesters, amid spiraling tension ahead of a presidential poll.