Three Egyptian policemen died on Saturday when gunmen fired on their car in the northern Sinai Peninsula city of al-Arish before escaping, security sources said.
Two policemen died at the scene of the attack on the suburbs of al-Arish, the administrative center of North Sinai, while one of the other two wounded died at the hospital later after the attack, medical and security sources said.
The August 5 attack - the deadliest in Sinai since Egypt's 1973 war with Israel - prompted the government to send in hundreds of troops backed by tanks, armored vehicles and helicopters in a joint operation with police to raid militant hideouts, arrest suspects and seize weapons.
But efforts to impose central authority in the lawless desert region are complicated by the indigenous Bedouin population's ingrained hostility to the government in Cairo.
Armed men seized a military vehicle last month, ejected an officer and a soldier and then drove into the desert.
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