had: UN says gunmen in Chad block Darfur refugees

Gunmen in eastern Chad have prevented the United Nations from moving newly-arrived refugees from Sudan's Darfur region away from a volatile border area and into camps, the world body said on Friday. U.N. refugee agency UNHCR said armed men stopped a group of families from boarding its trucks in the Birak border area this week and other refugees due to be collected had moved away for fear of attacks by Sudanese militias.