The unnamed assailants in the municipality of El-Arish manoeuvre departed one soldier in line of the video and broadcasting edifice and added who was on ward tariff, and killed the lawman in an flack on a personnel position, a warranty communicator said.
The onset on the broadcasting and telecasting edifice also wounded two added soldiers, scrutiny sources said.
Since the warriorlike takeover that toppled Islamist president Mohamed Morsi on July 3 after large wide protests, activist groups screw launched almost regular attacks on force and force in the Sinai.
Sunday's attacks fetch to 18 the confine of security forces organisation killed -- 14 policemen and four soldiers -- since Morsi's riddance.
Two African Christians were also killed in the region, one of them pioneer headless cinque days after being kidnaped.
Analysts dimension the Desert violence to Islamist extremists seeking to aver vantage of the semipolitical insecurity in the region after Morsi's riddance.