Israeli occupation authorities today closed Karm Abu Salem, Gaza strip sole commercial crossing which will also remain closed tomorrow.     Chairman of the Coordinating Committee of Gaza’s Supplies Raed Fattouh said the Israeli side told us told us that Karm Abu Salem commercial crossing will be closed on Friday and Saturday and will be re-opened as usual on Sunday morning.      In a statement he gave today, Fattouh pointed out that the occupation authorities yesterday allowed the entry of 283 trucks loaded with aid goods and building materials for the benefit of international projects in addition to the pumping of 134,730 kgs of cooking gas.