On the eve of a U.N. fact-finding team's visit to the Jenin refugee camp, Palestinian gunmen infiltrated a Jewish settlement and killed at least four Israeli settlers, including a 5-year-old girl. Israeli troops were conducting a manhunt for the gunmen early Sunday after the attack on the Jewish settlement of Adora, near the West Bank town of Hebron. The shooting happened about 9:45 a.m. Saturday (2:45 a.m. EDT) when the gunmen, dressed in Israeli army uniforms, entered the settlement through a fence, the Israel Defense Forces said. The gunmen killed the girl and wounded her two brothers in one house before entering a second house, killing a woman and wounding her husband inside, military officials said.