Another six soldiers were wounded in the attack in the town of Sheikh Zuweid and were transported to the military hospital in El-Arish. Three of the attackers were killed in the exchange of fire, according to military sources.
Egypt has been fighting Islamist insurgents for years on the Sinai Peninsula, and the violence worsened after the military coup against Islamist President Mohamed Mursi in 2013.
IS carries out constant attacks, especially on the military, the Christian minority and all others accused of collaborating with the police and security forces.
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