SOUTH SUDAN – Clashes inside a United Nations compound in South Sudan killed at least 18 people, including two Doctors Without Borders staffers, the organization said Thursday.

The fighting erupted Wednesday evening and continued Thursday at a U.N. civilian protection site in the northeastern city of Malakal, officials said. Doctors Without Borders teams reported treating dozens of wounded. Youths from the Shilluk and Dinka ethnic groups fought using small arms, machetes and other weapons, the United Nations Mission in South Sudan said in a statement condemning the violence. U.N. police used tear gas to disperse the crowd, the mission said. Officials released photos showing smoke billowing in the sky above the compound.(CNN)…[+]