Egyptian security forces on Friday killed nine militants who took part in a bomb attack at the Italian consulate in Cairo in July, the Interior Ministry said.
The ultra-hardline Islamic State group, which has supporters based in Egypt's Sinai peninsula, had claimed responsibility for that July attack which killed one person.
The Interior Ministry said three policemen were wounded in an exchange of fire with what it called "terrorists" killed in a raid on a house in Cairo on Friday. It said they were found with weapons, including belts used for suicide bombings.
Hours before the Interior Ministry issued a statement, officials told Reuters that security forces killed nine members of the Muslim Brotherhood movement in the same operation. The group, whose top leaders have been sentenced to death in what human rights groups call unfair trials, says it is committed to peaceful activism.
"The Brotherhood members clashed with security forces," said one of the officials, adding that they were meeting to plan what he called "terrorist attacks".
Egypt's government describes militants as terrorists and makes no distinction between the Brotherhood, which renounced violence decades ago, and groups like Islamic State and al-Qaida, arguing they share the same ideology.