The United Nations calls in aid after 30 people are killed . Government troops have also battled rebel groups such as M23 , which was defeated in November . The fighting was between two communities of Congolese . The town has long been the center of ethnic and political conflict .
The United Nations calls in aid after 30 people are killed . The fighting was between two communities of Congolese . The town has long been the center of ethnic and political conflict .