IAF jets fired missiles into gasoline stations in the southern port city of Tyre Sunday and killed at least seven people in other attacks as planes ranged across the skies above Lebanon from north to south in the final day before a cease-fire was to take hold. Huge fires could be seen near the al-Bass Palestinian refugee camp north of Tyre and near the Najem hospital in the city after the filling stations were hit. There were no immediate reports of casualties in the intense series of strikes that began about 11:30 a.m. Earlier, at least five people died - a woman, her three children and a housemaid - in a strike that destroyed a building at Bourj el-Chemali, one mile east of the city. Jets returned to the village about noon and destroyed two more houses near the Lebanese army post on the road leading to Bourj el-Chemali. In the Bekaa Valley, security officials reported two people killed and four wounded in an airstrike on Shaath, north of the Hezbollah stronghold of Baalbek. Warplanes also destroyed a bridge near the northern town of Halba in the remote Akkar region bordering Syria, wounding two people, local television and security officials reported. Jets also raided the area of Ali Nahri in the eastern Bekaa Valley near the border with Syria.