An immigration officer (L) documents returning Nigerians fleeing escalating violence in the Central African Republic, at the Nnamdi Azikiwe International Airport in Abuja, January 4, 2014. Nigeria has airlifted 1,113 fleeing refugees in the last 24 hours, a National Emergency Management Agency (NEMA) coordinator reported. Violence in Central African Republic has uprooted nearly a million people, a fifth of the population, hampering aid efforts, particularly in the capital Bangui, the U.N. refugee agency (UNHCR) said on Friday. A flare-up in violence between Muslim fighters and Christian militias has displaced more than 200,000 people in the past few weeks alone, leaving a total of 935,000 homeless. Picture taken January 4, 2014. REUTERS/Afolabi Sotunde (NIGERIA - Tags: SOCIETY IMMIGRATION POLITICS TRANSPORT CIVIL UNREST CONFLICT)