IAF warplanes bombed three tunnels underneath the Philadelphi Corridor on Wednesday evening. Palestinians reported that four people were wounded in the air strike on the Gaza-Egypt border. The air raid came shortly after Palestinians fired a Kassam rocket at a coastal area south of Ashkelon. Nobody was wounded in the attack, and no damage was reported. Earlier, Hamas claimed responsibility for firing three mortar shells at the Sha'ar Hanegev region. A total of six mortar shells were fired at southern Israel throughout the day. The army said Wednesday that approximately 670 Kassam rockets, mortar shells and Grad missiles had been fired at Israel since the beginning of 2009.