Suspected Islamists militants killed a policeman in a drive-by shooting Thursday in Egypt's Sinai Peninsula, where troops are battling to contain near daily violence, security officials said.
The attack in the North Sinai provincial capital of El-Arish came a day after militants killed a soldier in the central Sinai, and two days after roadside bombs killed a security force member and a civilian.
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Egypt has poured troops and armour into the Sinai in a bid to crush militant activity, which has surged since Islamist president Mohamed Morsi was overthrown in a July 3 military coup.
Dozens of soldiers and police have been killed in near daily attacks in the sensitive region, which borders both Israel and the Gaza Strip.
Officials said the security forces uncovered a makeshift field hospital on Thursday which militants had set up in the town of Sheikh Zuwayed, between El-Arish and the Gaza border.
They found surgical equipment and blood supplies in the five-room facility, the officials said.