A security source said the terrorists belonged to the Beit el-Maqdis militant group, state-run MENA news agency said.
Also 54 shelters and houses, 29 motorcycle and four vehicles used by terrorist in their attacks against army and police personnel were destroyed, the source said.
The militant attacks targeting police and military increased after the ouster of Islamist ex-president Mohamed Morsi last year. Many policemen and soldiers have been killed in the attacks.
On Tuesday, six policemen were killed and two others were severely injured in an explosion in Rafah, North Sinai, after unknown militants targeted a military vehicle with an explosive device.
The vehicle was on a mission to detect landmines. The intensity of the anti-tank mine made the vehicle spin three times in the air before it landed, killing the six policemen on board.