Israeli forces surrounding the house of a wanted Palestinian in the West Bank town of Qabatiya exchanged gunfire with Palestinian fighters Sunday in an ongoing gunbattle that has left at least six Palestinians dead, Palestinian security sources said. Another Palestinian, identified by security sources as a Palestinian intelligence officer, was killed in a separate clash in the nearby city of Jenin. Also Sunday, an American teenager died from wounds sustained in the April 17 Tel Aviv suicide bombing, a hospital spokeswoman told CNN.