Nine people, including six policemen, have been killed after a makeshift bomb exploded in a Cairo suburb.
The blast happened as Egyptian police prepared to raid a militant hideout near the pyramids.
The country’s Interior Ministry said in a statement that its security forces had arrived in their vehicles to raid an apartment and found the building booby-trapped.
The device went off when they tried to defuse it.
Ten people were wounded, the sources said.
Islamist militants have stepped up attacks on Egyptian soldiers and police since the army toppled president Mohammed Mursi of the Muslim Brotherhood in 2013 after mass protests against his rule.
Civilians have also been killed