At least 10 persons, including seven policemen, were killed in a powerful blast near the ancient pyramids of Giza in Egypt. According to local media, the explosion occurred when the police officials attempted to defuse a time-bomb during a raid.

It is yet unclear whether any of the those reportedly hiding in the apartment were injured, killed or captured. The blast took place ahead of Monday’s anniversary of the 2011 revolution that ousted former strongman Hosni Mubarak.

In recent months, Egyptian security forces have carried out several raids on apartments where suspected or fugitive Islamists militants were reportedly either hiding or preparing for terrorist operations.