The deteriorating security situation in the Central African Republic is hampering delivery of assistance to nearly 2.6 million people.
This warning has come from United Nations humanitarian agencies as inter-ethnic tensions and violence continue to grow.
There is fear that this may escalate to large-scale massacres in the country where there has been a breakdown of law and order following the ouster of the government by the Séléka rebel coalition in March.
Thousands of people have been displaced by fighting between self-defense units and former Séléka fighters in the country.
Derrick Mbatha reports.