The United Nations said Wednesday that delivery of aid to thousands of victims of a devastating landslide in Afghanistan is being hampered by increasing numbers of outsiders flocking to the area, attracted by the large amount of relief supplies. At least 500 people have been killed and over 2,000 remain missing after Friday's landslide, which sent a deluge of mud and rocks crashing on top of a village in the remote Badakhshan province, bordering Tajikistan. Roughly 700 families in Aab Bareek village in Argo district have been displaced, the United Nations said, with some 300 houses completely buried in mud. Each family has about five members.