Quds city, July 24, SPA -- Palestinian extremists killed two Israeli motorists in the Gaza Strip early Sunday and sent a suicide bomber into Israel, intensifying attacks ahead of Israel's withdrawal from the territory next month. The bomber, who had cut a hole into the Gaza-Israel border fence, was caught near an Israeli communal farm in the area with an explosives belt of 5 kilos (11 pounds). The bomb was detonated by Israeli troops, The Associated Press reported. Israeli Prime Minister Ariel Sharon warned that the military would respond in an unprecedented fashion if Israeli soldiers and settlers come under fire during the Gaza pullout. Sharon said he told visiting U.S. Secretary of State Condoleezza Rice that "our reaction (to attacks) will be of a different kind, with the addition of very harsh means, both if it takes place during the evacuation, or after we evacuate the Gaza Strip."