IDF soldiers arrested on Saturday two young Palestinians who were involved in planning a suicide attack in Israeli territory, sources revealed on Sunday morning. Osama Zabah, 19, and Ahmad Tahama, 21, were caught at a checkpoint west of Jenin and were detained for further interrogation. Meanwhile, Egyptian security forces began a large-scale search throughout Sinai on Saturday, after four Palestinian terrorists suspected of planning attacks against Israelis infiltrated the Egyptian peninsula through the Rafah Crossing. Israeli security forces continue to prevent many would-be Palestinian terror attacks in Israel nearly daily. In late September, the IDF thwarted a major suicide attack when it killed at least three Palestinian gunmen during a raid in Nablus's Balata refugee camp. "This was part of a series of pressure raids we are carrying out in the city of Nablus and its surroundings," the deputy commander of the Paratrooper Brigade's Battalion 101, Maj. Meir, said at the time. "There is no doubt that we thwarted a major terrorist attack." Yaakov Katz and AP contributed to this report.