(KUNA) -- Palestinian gunmen on Thursday blew up the border wall separating Gaza Strip from neighboring Egypt in the town of Rafah, witnesses said. The gunmen of Salah Eddine Brigades, military wing of the Peoples Resistance Committees in Palestine, an umbrella of several factions, blew up a section of the wall in protest of Israel's closure of Rafah border checkpoint, they said.Palestinian policemen rushed to the scene and took measures after the blast left a large crater in the fence, and Egyptian security forces took up positions on the other side of the border to prevent infiltrations. The explosion came a day after the committees declared that a promise was made to reopen the border point, shut since several days ago. Some 2,000 Palestinians have been waiting to be allowed to cross on the Egyptian side of the border line since a week ago.