At least four Egyptian police officers were killed on Monday when an explosive device detonated in northern Sinai, a security official said.
Three other policemen were injured in the blast that was carried out near a police patrol in the western part of al-Arish city, the capital of the northern governorate, Efe news reported.
Clashes erupted after the explosion, during which the security forces killed five suspected militants. No one claimed responsibility for the attack.
Egypt has seen a series of terror attacks, mainly targeting security forces, since the ousting of Islamist President Mohamed Morsi in 2013.
--IANS
soni/bg
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