The sun sets during clashes between Egyptian protesters and riot police in downtown Cairo, Egypt, Saturday, March 9, 2013. Security officials say a protester has died during clashes between police and hundreds of stone-throwing demonstrators in central Cairo. The officials say the protester died Saturday on a Nile-side road where clashes have been taking place daily between anti-government protesters and police near two luxury hotels and the U.S. and British embassies. (AP Photo/Nasser Nasser)

An Egyptian protester runs with a teargas canister during clashes with riot police in downtown Cairo, Egypt, Saturday, March 9, 2013. Security officials say a protester has died during clashes between police and hundreds of stone-throwing demonstrators in central Cairo. The officials say the protester died Saturday on a Nile-side road where clashes have been taking place daily between anti-government protesters and police near two luxury hotels and the U.S. and British embassies. (AP Photo/Nasser Nasser)

An injured security official is carried from a police officers club in the upscale neighborhood of Zamalek, after protesters set fires following a court verdict in Cairo, Egypt, Saturday, March 9, 2013. Fans of Cairo’s Al-Ahly club have stormed Egypt’s soccer federation headquarters and a nearby police club, and set them ablaze after a court acquitted seven of nine police official on trial for their alleged part in deadly stadium melee. (AP Photo/Mohammed Asad )

Egyptian soccer fans of the Al-Ahly club celebrate in front of their club in Cairo, Egypt, after an Egyptian court confirmed death sentences against 21 people for their role in a deadly 2012 soccer riot that killed more than 70 people in the city of Port Said, Saturday, March 9, 2013. (AP Photo/Amr Nabil)

An Egyptian man walks on the grounds of a police officer's club as a fire set by protesters burns in Cairo, Egypt, Saturday, March 9, 2013. An Egyptian court on Saturday confirmed the death sentences against 21 people for taking part in a deadly soccer riot but acquitted seven police officials for their alleged role in the violence, touching off furious protests in Cairo that torched the soccer federation headquarters and a nearby police club.(AP Photo/Ahmed Gomaa)

An Egyptian man walks on the grounds of a police officer's club as a fire set by protesters burns in Cairo, Egypt, Saturday, March 9, 2013. An Egyptian court on Saturday confirmed the death sentences against 21 people for taking part in a deadly soccer riot but acquitted seven police officials for their alleged role in the violence, touching off furious protests in Cairo that torched the soccer federation headquarters and a nearby police club.(AP Photo/Ahmed Gomaa)

An Egyptian police helicopter flies through smoke from fires set by protesters at a police officers club and the Egyptian Soccer Federation following a court verdict in Cairo, Egypt, Saturday, March 9, 2013. Fans of Cairo’s Al-Ahly club have stormed Egypt’s soccer federation headquarters and a nearby police club and set them ablaze after a court acquitted seven of nine police official on trial for their alleged part in deadly stadium melee. (AP Photo/Maya Alleruzzo)

Egyptian protesters clash with riot police in downtown Cairo, Egypt, Saturday, March 9, 2013. Security officials say a protester has died during clashes between police and hundreds of stone-throwing demonstrators in central Cairo. The officials say the protester died Saturday on a Nile-side road where clashes have been taking place daily between anti-government protesters and police near two luxury hotels and the U.S. and British embassies. (AP Photo/Nasser Nasser)

Smoke rises from the Police Officers Club, left, and the Egyptian Soccer Federation, right, as a police helicopter surveys the scene after protesters set fire following a court verdict in Saturday, March 9, 2013. Fans of Cairo’s Al-Ahly club have stormed Egypt’s soccer federation headquarters, set it ablaze after a court acquitted seven of nine police official on trial for their alleged part in deadly stadium melee. A fire also broke out Saturday in a nearby police club, but it was not immediately known whether Al-Ahly fans started the blaze there too. (AP Photo/Maya Alleruzzo)

Smoke rises from the Police Officers Club, left, and the Egyptian Soccer Federation, right, as a police helicopter surveys the scene after protesters set fire following a court verdict in Cairo, Egypt, Saturday, March 9, 2013. Fans of Cairo’s Al-Ahly club have stormed Egypt’s soccer federation headquarters, set it ablaze after a court acquitted seven of nine police official on trial for their alleged part in deadly stadium melee. A fire also broke out Saturday in a nearby police club, but it was not immediately known whether Al-Ahly fans started the blaze there too. (AP Photo/Maya Alleruzzo)

Several protesters set fire to tires on the city's dock in an attempt to prevent ships from coming in to the strategic city of Port Said at the Mediterranean end of the Suez Canal, in Egypt, Saturday, March 9, 2013. An Egyptian court on Saturday confirmed the death sentences against 21 people for taking part in a deadly 2012 soccer riot but acquitted seven police officials for their alleged role in a trial that has been the source of some of the worst unrest to hit Egypt in recent weeks. (AP Photo/Ahmed Ramadan)

Policemen try to extinguish fire at a police club set by protesters following a court verdict in Cairo, Egypt, Saturday, March 9, 2013. Fans of Cairo's Al-Ahly club have stormed Egypt's soccer federation headquarters, set it ablaze after a court acquitted seven of nine police officials on trial for their alleged part in deadly stadium melee. A fire also broke out Saturday in a nearby police club, but it was not immediately known whether Al-Ahly fans started the blaze there too. (AP Photo/Amr Nabil)

Egyptian soccer fans of Al-Ahly club celebrate in front of their club in Cairo, Egypt, Saturday, March 9, 2013 after an Egyptian court confirmed death sentences against 21 people for their role in a deadly 2012 soccer riot that killed more than 70 people in the city of Port Said. Banner at background shows pictures of the victims with Arabic reading, "we will never forget you." (AP Photo/Amr Nabil)