Militants killed three policemen and injured seven others in Egypt`s North Sinai on Thursday night when they hit a patrol car with RPG fire.
Local officials told state news agency MENA that unidentified assailants targeted the police vehicle in El-Masaeed district on a main road near Al-Arish city.
Initial reports from MENA indicated two people had died in an attack, but on Friday afternoon a third policeman injured in the attack died.
None of the militant groups currently active in Sinai have yet claimed responsibility for the attack.
Militant attacks on police and military targets have become commonplace in North Sinai since the ouster of Islamist president Mohamed Morsi in the summer of 2013, with some attacks also taking place in other parts of the country, including the capital. Hundreds have been killed in the violence.
The Egyptian military has targeted militant hideouts with helicopters and ground troops, killing scores of militants, according to army statements.