A National Security officer died on Saturday from injuries sustained two days earlier in an explosion during a security raid on a suspected militant hideout in Giza, bringing the total death toll from the blast to 11.
The explosion initially killed ten people, including seven policemen and three civilians. Ten police personnel were injured, including Major Ahmed Ibrahim El-Refai who died at Cairo's Police Hospital to increase number of slain policemen to eight.
Four civilians were injured in the attack.
A civilian who lived in the building was killed in the explosion, and two charred bodies were found inside the apartment, according to the ministry statement.
The interior ministry said that the police officers were attempting to defuse a time-bomb during the raid on an apartment in Marioutiya, where suspected Islamist militants were believed to be staying.
An ISIS-affiliated group and another militant group called "Revolutionary Punishment" have both claimed responsibility for the incident, which took place days before the fifth anniversary of the 25 January Revolution.
In a statement issued on Friday and published on its alleged Twitter accounts, Sinai-based Ansar Beit Al-Maqdis "ABM" claims police personnel were killed and injured when they entered a "booby-trapped" house.
In recent months, Egyptian security forces have carried out dozens raids on apartments where suspected or fugitive Islamists militants were reportedly either hiding or preparing for “terrorist operations.”
These raids have often ended with suspects killed by police, who say they were met with gunfire upon arrival at the hideouts.
Police have also reportedly conducted door-to-door raids of dozens of apartments in downtown Cairo ahead of the 25 January anniversary, questioning occupants about their political activities.