The attack was carried out two days after ten members of Egyptian security forces were killed in a blast during a counterterrorism raid in Sinai.
Egypt has been fighting a jihadist insurgency in northern Sinai since the army overthrew then President Mohamed Morsi in 2013. Police and security forces have been the target of deadly attacks by Islamists in the area.
In 2014, militants in Sinai pledged allegiance to the Daesh group, which is outlawed in many countries including Russia. The Wilayat Sinai, the Daesh branch in Sinai, has claimed responsibility for a number of deadly attacks in the area.
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