Three people were killed and 13 others were injured on Monday in the North Sinai village El Kharouba, following a bomb attack on a vehicle belonging to the roads and bridges authority, as they conducted work in the area.
The dead and injured were workers from the roads and bridges authority.
The incident took place on the road between Al Arish and Sheikh Zowaid where Al Kharouba is located.
Both the dead and injured bodies were transferred to Al Arish's public hospital while the prosecution began carrying out investigations into the incident.
Deputy-governor of North Sinai, Sameh Eissa, visited the injured people in the hospital and ordered the supply of all required medical treatments, as well as facilitating the transfer of cases requiring treatment to any other governorate.
Hundreds of police and soldiers, as well as civilians, have been killed in militant attacks in recent months, mostly in North Sinai.
Sinai-based militant group Ansar Beit Al-Maqdis, who pledged allegiance to the Islamic State militant group late last year, claim most attacks against the army and police personnel in the peninsula.
Egypt's army has been fighting a decade-long militant Islamist insurgency that has increased since the ouster of Egypt's first elected president, Muslim Brotherhood leader Mohamed Morsi, in the summer of 2013 following nationwide mass protests against his rule.