Egyptian authorities on Monday uncovered an underground weapons store in Sinai near the Israeli border, an Egyptian security official said. A large Egyptian force raided al-Jora in Sheikh Zuweid and found an underground warehouse containing 15 anti-tank landmines, grenades and the same type of projectiles that have been used in confrontations with the Egyptian army, a security official told Ma\'an. The warehouse was located around five kilometers from the Israeli border, the official added.