A roadside bomb killed four security personnel Wednesday in the Sinai Peninsula, where Egypt's military is combating an Islamist insurgency, security sources told Al-Ahram Arabic news website.
Two army officers and two recruits were killed when the roadside bomb went off in a village near the town of Rafah in North Sinai, a hotbed of jihadist fighters who have stepped up their attacks since the 2013 ouster of Islamist president Mohamed Morsi.
The attack was reported shortly after three civilians were killed in a separate attack south of Rafah.
Hundred of policemen and soldiers have been killed in the growing militant violence, which has also led to civilian casualties.
The Egyptian army has poured troops in the Peninsula as part of an extensive campaign to crush the insurgency.
In its latest report on its operations against militants, the army said it has killed over 700 "terrorists" over the past six months.