In Friday, March 4, 2011 Egyptian protesters arrest a security policeman, center in striped green.(A

Egyptians search an office in the state security agency building in Nasr City in Cairo (REUTERS)

A man searches the cabinets in an office of the state security agency building in Nasr City in Cairo

A man holds up a signage from the state security agency building in Nasr City in Cairo (Reuters)

A man holds up a weapon found in an office in the state security agency building in Nasr City (Reute

A man walks away with documents after searching an office in the state security agency building (Reu

Egyptian demonstrators and soldiers are seen inside the police state security agency (Reuters)

An Egyptian man holds a tear gas canister and other police equipment taken from the police (Reuters)

An Egyptian man holds police ammunition taken from the police after clashes with police security (Re

A soldier guards the area as protesters burn police vehicles outside the police security (Reuters)

Egyptians gather near burning police vehicles that have been set alight by protesters outside the po

An army officer arrests a member of the police security as Egyptians watch outside the police securi

An Egyptian man sits on a police security car as blood is seen smeared on the wall (Reuters)

Police vehicles were set alight by protesters are seen outside the police security headquarters (Reu

Egyptians carry a fainting soldier during clashes between protesters and security police (AP)

state security cars smoulder after they were set on fire by protesters outside the police security h

people take pictures of the burning state security building after it was set on fire by angry protes

Egyptian military police seize documents from protesters after they stormed the security police head