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Protesters gather in Tahrir Square, the focal point of Egyptian uprising, in Cairo, Egypt, Friday April 20, 2012. The Arabic banner reads, "Tantawi, Egypt's military ruler, in the constitution the ruling council has no role." Tens of thousands of protesters packed Cairo's downtown Tahrir Square on Friday in the biggest demonstration in months against the ruling military, aimed at stepping up pressure on the generals to hand over power to civilians and bar ex-regime members from running in upcoming presidential elections.(AP Photo/Amr Nabil)

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.