Chad accused Libya of "daily and flagrant violations" of Chadian airspace with flights over towns in northern and eastern Chad, but the truce between the two North African neighbors appeared to be holding. The Chadian Embassy in Paris said in a statement that Libyan warplanes flew over the towns of Wour and Zouar, in the northwest, on Saturday and Sunday. But the embassy did not report any cease-fire violations. The cease-fire, negotiated by the Organization of African Unity, took effect at midday Friday. The two countries are fighting over the ownership of the Aouzou Strip, a mineral-rich area lying between the two countries.