- 7 updates
A fourth explosion has gone off in the Egyptian capital, killing one person, the Associated Press reports.
Protesters supporting the Egyptian army have taken to the streets of Cairo after the capital's police and state security buildings were targeted in three separate bombings, which killed at least five people and injured dozens.
A third explosion has been reported outside a police station in Cairo, hours after a car bomb killed at least four people and a second explosion in the Egyptian capital killed a police officer.
There were no immediate reports of casualties from the third blast, which was heard in the Talbeya neighbourhood in the suburb of Giza.
An early morning suicide car bombing that killed at least four people in the Egyptian capital Cairo has been followed by another deadly blast in the city.
At least one person has been killed in the second blast, state television reported.
Security sources said around 50 people were wounded in the earlier blast, which targeted the Cairo Security Directorate, a headquarters for police and state security. The dead included three policemen.
No claim has yet been made for the bombings, which form one of the most high-profile attacks on the state in months, and comes a day before the third anniversary of the uprising that toppled former president Hosni Mubarak.
The Egyptian interior ministry said at least three people have died and dozens more are injured after a car bomb exploded outside police headquarters in Cairo.
The vehicle was attempting to enter the security compound, the ministry added.
The AFP news agency said the Cairo explosion was caused by a car bomb.
A blast that shook central Cairo on Friday morning took place near police headquarters, state television reported.
Reuters witnesses heard gunfire after the explosion. State television quoted witnesses as saying gunmen opened fire on buildings after the blast. Smoke was rising over the city centre.
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