Two low-ranking policemen were killed while a police officer and four conscripts were injured after the explosion of an improvised explosive device (IED) west of Al-Arish city in North Sinai early on Monday, Ahram Arabic news website announced.
The IED exploded and hit an armored vehicle that was carrying the security personnel in west Al-Arish.
The explosion killed 35-year-old El-Siyad Azab and 33-year-old Mohamed Hamdy, who were both low ranking policemen.
The injured police personnel were transferred to hospital.
The attack comes 24 hours after an attack targeted an ambulance transferring injured conscripts to hospital after an earlier attack on Sunday.
Egypt's army has been fighting an Islamist insurgency in parts of North Sinai, which has resulted in the deaths of hundreds of militants, members of security forces and local residents.