(Updated Wednesday 9:30 AM) IDF troops operating in the Rafiach area of southern Gaza last night discovered and then destroyed two Arab weapons smuggling tunnels. PLO residents hurled grenades and fired at the soldiers. The troops returned fire wounding one of the Arabs. Soldiers also came under fire near the Gush Katif community of Gadid. No injuries were reported. In addition, 15 Arabs wanted for terror activity were arrested last night in the town of Beit Hanoun, in northern Gaza.