Seven people including four police personnel died when a suicide bomber targeted police near a market in the North Sinai town Sheikh Zuweid, Egypt’s interior ministry said in a statement.
The attacker was around 15, the ministry said, and a six-year-old was among the dead. Twenty-six other people were wounded and transferred to hospital, it said.
The attack happened while security forces were conducting a sweep near the market, the statement said.
The head of investigations in the town and his assistant were among those killed, security sources said.
The Islamic State group claimed responsibility and said 15 people were killed or wounded. It identified the attacker as Abu Hagar al-Masry and said he detonated an explosive vest near a police foot patrol.
Egypt is battling an Islamist militant insurgency that has carried out attacks mainly in the remote Sinai Peninsula, where the military has been conducting a major security operation since February 2018.