`` It is a sign of the still fraught and highly dangerous situation , '' aid leader says . Attackers strike a convoy carrying Christians , UNHCR group says . The Christians country is wracked by violence between Muslims and Muslims . Nearly a million more people are injured and being treated at a hospital the group supports .
`` It is a sign of the still fraught and highly dangerous situation , '' aid leader says . Attackers strike a convoy carrying Muslims , Save the Children group says . The African country is wracked by violence between Christians and Muslims . At least 23 more people are injured and being treated at a hospital the group supports .