Egyptian Police

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An Egyptian worker peers from the window of the damaged Museum of Islamic Art after an explosion at the Egyptian police headquarters in downtown Cairo, Friday, Jan. 24, 2014. Egypt's antiquities minister says the car bombing that struck the main police headquarters in Cairo earlier in the day has caused major damage to the nearby Islamic art museum.(AP Photo/Khalil Hamra)

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People surround a body covered with a blanket on the street after a car bomb explosion at the Egyptian police headquarters in downtown Cairo, Friday, Jan. 24, 2014. A car bomb struck the main Egyptian police headquarters Friday in the heart of Cairo, killing at least several people in a hugely symbolic attack on the eve of the third anniversary of the 2011 uprising that toppled longtime autocratic ruler Hosni Mubarak. (AP Photo/Khalil Hamra)

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A man carries an Egyptian police officer to an ambulance after a blast at the Egyptian police headquarters in downtown Cairo, Friday, Jan. 24, 2014. A car bomb struck the Egyptian police headquarters in downtown Cairo on Friday, killing at least several people and wounding dozens, the country's state media reported. (AP Photo/Khalil Hamra)

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Egyptian police officers walk thorough water that came out of the underground water pipe after a blast at the Egyptian police headquarters as firefighters check the damage in downtown Cairo, Friday, Jan. 24, 2014. A car bomb struck the Egyptian police headquarters in downtown Cairo on Friday, killing at least several people and wounding dozens, the country's state media reported. (AP Photo/Khalil Hamra)

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Egyptians shout anti-terrorism slogans as they demonstrate in front the site of a blast at the Egyptian police headquarters, at right, and the Museum of Islamic Art, at left, in downtown Cairo, Egypt, Friday, Jan. 24, 2014. A car bomb struck the main Egyptian police headquarters Friday in the heart of Cairo, killing several people in a hugely symbolic attack on the eve of the third anniversary of the 2011 uprising that toppled longtime autocratic ruler Hosni Mubarak. (AP Photo/Amr Nabil)

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Egyptian plainclothes policemen stand guard in front of the Museum of Islamic Art at the site of a blast at the Egyptian police headquarters in downtown Cairo, Egypt, Friday, Jan. 24, 2014. Egypt's antiquities minister says the car bombing that struck the main police headquarters in Cairo earlier in the day has caused major damage to the nearby Islamic art museum.(AP Photo/Amr Nabil)

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Egyptian policemen stand guard in front of the Museum of Islamic Art at the site of a blast at the Egyptian police headquarters in downtown Cairo, Egypt, Friday, Jan. 24, 2014. Egypt's antiquities minister says the car bombing that struck the main police headquarters in Cairo earlier in the day has caused major damage to the nearby Islamic art museum.(AP Photo/Amr Nabil)

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Egyptian police officers and firefighters gather at the Egyptian police headquarters after a blast in downtown Cairo on Friday, Jan. 24, 2014. A car bomb struck the Egyptian police headquarters in downtown Cairo on Friday, killing at least several people and wounding dozens, the country's state media reported. (AP Photo/Khalil Hamra)

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Egyptian police officers sit on the street after a blast at the Egyptian police headquarters in downtown Cairo, Friday, Jan. 24, 2014. A car bomb struck the Egyptian police headquarters in downtown Cairo on Friday, killing at least several people and wounding dozens, the country's state media reported. (AP Photo/Khalil Hamra)