The Israel occupation army closed today the ??Nablus area in the West Bank and re-activated old checkpoints and set up new barriers in the wake of the attack on the Itamar settlement, South of Nablus City, an attack that killed five Jewish settlers, Palestinian sources said. In the meantime, Israeli military sources said today that a Palestinian has infiltrated a house in the settlement, killed five settlers and fled away. Five settlers in the settlement were stabbed to death. The occupation army has set up army check-points in the southern region of the city and began combing the area.