At least 600 people killed in clashes between Murle and Lou Nuer tribes . `` During yesterday 's flyover , the assessment team saw two villages that appeared to be torched to the ground . '' - The UN says it has received reports of more than 100 deaths from the violence so far. Ban Ki-moon urges the government of South Sudan to restore security in Jonglei .
At least 600 people killed in clashes between Murle and Lou Nuer tribes . - The UN says it has received reports of more than 100 deaths from the violence so far. Ban Ki-moon urges the government of South Sudan to restore security in Jonglei .