`` It is a sign of the still fraught and highly dangerous situation , '' aid leader says . ( CNN ) -- Gunmen launched grenades and used machetes against Muslims being evacuated in a truck convoy in Central African Republic , killing at least three children and 19 adults , a humanitarian group said Saturday . The United Nations has warned that more than half of Yemen's population faces starvation as fighting between government forces loyal to President Abd-Rabbu Mansour Hadi and Houthi rebels rages in Sanaa. 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 .
`` It is a sign of the still fraught and highly dangerous situation , '' aid leader says . The United Nations has warned that more than half of Yemen's population faces starvation as fighting between government forces loyal to President Abd-Rabbu Mansour Hadi and Houthi rebels rages in Sanaa. 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 .