Egyptian security forces have killed 40 suspected militants in three separate incidents in North Sinai and Giza, the Interior Ministry said on Saturday, a day after a bombing on a Vietnamese tourist bus in Giza killed four people.

Gunmen ambushed an Egyptian security checkpoint on Friday, opening fire on a car and killing five policemen in an area just south of the capital, the state-run MENA news agency and the Interior Ministry said.

An Egyptian affiliate of the jihadist Islamic State group claimed responsibility Friday for a bomb blast during a police raid on a Cairo apartment that killed seven people, including five policemen.