Militants attacked a bus carrying Central Security Forces (CSF) conscripts early Sunday in Sheikh Zowaid, North Sinai.
Three CSF conscripts were reportedly injured in the attack on the Al-Arish-Rafah Highway in Sheikh Zowaid.
Security force told Aswat Masriya news website that unknown assailants attacked the bus using RPG missiles and firearms.
The source added that CSF personnel fired back at the attackers, who escaped the scene.
Not less than 100 police conscripts and army officers have been killed in attacks since the ouster of president Mohamed Morsi 3 July.