The ongoing security operation in North Sinai Governorate led to the arrest of seven suspected terrorists, spokesman of the Egyptian Armed Forces Col. Ahmad Ali said Tuesday. \"The army troops destroyed 49 cottages the militants used to use as launch pads for their terrorist attacks, besides destroying 14 vehicles and 10 motorbikes,\" he told reporters this evening. \"The troops seized a quantity of weapons and munitions, including anti-aircraft guns, RPGs, Grad missiles, mortar shells, landmines, 29 hand grenades, and four Palestinian military uniforms,\" the spokesman said. The joint military-police operation continues in the governorate backed by helicopters, he added