A missile fired from an Israeli helicopter has wounded 12 people in a Palestinian refugee camp in Gaza. Just before midnight on Thursday, Israeli tanks entered the Khan Yunus refugee camp in southern Gaza, witnesses said. Helicopters fired two missiles, and the second wounded 12 people, hospital officials said. Bulldozers tore down three houses across from a block of Jewish settlements. The Israeli military said the purpose was to clear areas used by resistance fighters to fire at Israelis. Early on Thursday, doctors said a 10-year-old girl, shot while in a Gaza classroom on 7 September, died of her wounds. Local UN officials blamed Israel. The military said there were exchanges of fire with resistance fighters, but soldiers did not shoot at the school. **Palestinian Resistance Kills Occupation Soldiers*** Palestinian resistance fighters have killed at least three Israeli soldiers guarding an illegal Jewish settlement in the occupied Gaza Strip. A spokesman for the Popular Resistance Committees (PRC) said on Thursday that it was responsible for the attack near the Morag colony north of Rafah city. A PRC spokesman said two of its members had also been killed during the attack but that a third survived the clash and had phoned in details of the operation. Israeli security sources confirmed there were casualties but refused to say who had died. However, an official at the settlement, Nissim Dehan, told Israel's Army Radio that troops had "suffered a heavy blow". Aljazeera's correspondent in Gaza said Israeli forces have begun making house-to-house searches in nearby Palestinian villages and that Apache helicopters are making continuous sweeps over the whole area. **Refugee raid ends*** Meanwhile, Israeli occupation forces have pulled out from the Khan Yunus refugee camp in southern Gaza, leaving a trail of destruction. In the name of destroying "the infrastructure of Palestinian terrorism", the army demolished seven homes and razed farm land to the ground in the al-Barabkha district of the camp, Aljazeera's correspondent said. "An Apache helicopter also fired two missiles. The first landed in open ground, but the second hit a home and injured more than 15 Palestinians inside, some seriously," the correspondent said. The Israeli army explained the measures would prevent Palestinian resistance groups from targeting military sites near illegal settlements and harming Israeli citizens. Tel Aviv plans to withdrawal from occupied Gaza next year, but many resistance groups remain suspicious that it will ever abandon its illegal settlements and so continue to wage a now four-year-old intifada. **New raids*** As soon as the raid on Khan Yunus ended, two new ones began in the occupied West Bank. Backed by more than 30 Israeli military vehicles and Apache helicopters, troops stormed into Jenin's refugee camp, Aljazeera's correspondent said. Searching for "wanted activists" during the third raid in as many days, gunfire and explosions where heard as soon as soldiers reached the centre of the camp. Israeli forces have also demolished two homes in the West Bank city of Nablus. Aljazeera's correspondent said the first house belonged to the family of Jerusalem bomber Zainab Abu Salman in the Askar refugee camp. The other belongs to Alaa Sanakra, a wanted al-Aqsa Martyrs Brigades activist, in the Balata refugee camp. **PHOTO CAPTION*** Israeli citizen walks in front of a poster of Israeli Prime Minister Ariel Sharon in Jerusalem September 22, 2004. (Reuters)