Quds City, Sept 9, SPA -- Six Palestinians were killed by Israeli army fire in the West Bank and Gaza Strip, the Associated Press reported today. In the single deadliest incident, in the northern Gaza Strip, soldiers opened fire from a tank-mounted machine gun at Palestinians, killing at least three, including a 13-year-old boy, and wounding nine, Palestinian hospital officials said. In fighting Thursday, Israeli forces exchanged fire with Palestinians on the outskirts of the sprawling Jebaliya refugee camp. One gunman was killed and three were wounded when an Israeli attack helicopter fired two missiles toward the area. Later Thurday, soldiers fired from a tank-mounted machine gun toward a group of Palestinians in the adjacent town of Beit Lahia, killing three and wounding nine, hospital officials said.