A senior UN envoy has called for a huge international effort for the Central African Republic.
Speaking to the BBC in the capital, Bangui, John Ging of the UN Office for the Co-ordination of Humanitarian Affairs (OCHA) said the country was in a "mega-crisis".
Mr Ging said that many in the population were living in fear because of religious and ethnic attacks.
He said the concern now was that matters could worsen further.
Last week the UN warned that the country faced disaster because of people fleeing the conflict to pack into overcrowded camps with poor sanitation.